diff --git a/app/assets/stylesheets/app.utilities.scss b/app/assets/stylesheets/app.utilities.scss
index 69821a820..c00d31671 100644
--- a/app/assets/stylesheets/app.utilities.scss
+++ b/app/assets/stylesheets/app.utilities.scss
@@ -346,6 +346,10 @@ p, .widget p {
   vertical-align: super
 }
 
+.help-cursor {
+  cursor: help;
+}
+
 @media screen and (min-width: $screen-lg-min) {
   .b-r-lg {border-right: 1px solid $border-color; }
   .hide-b-r-lg { border: none !important; }
diff --git a/app/assets/templates/shared/_member_form.html.erb b/app/assets/templates/shared/_member_form.html.erb
index c9649a271..03a11c2a8 100644
--- a/app/assets/templates/shared/_member_form.html.erb
+++ b/app/assets/templates/shared/_member_form.html.erb
@@ -57,7 +57,7 @@
                    ng-disabled="preventField['profile.gender'] && user.statistic_profile.gender && !userForm['user[statistic_profile_attributes][gender]'].$dirty"/>
               <i class="fa fa-female m-l-sm"></i> {{ 'woman' | translate }}
           </label>
-        <span class="exponent m-l-xs"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
+        <span class="exponent m-l-xs help-cursor" title="{{ 'used_for_statistics' | translate }}"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
 
         <span class="help-block" ng-show="userForm['user[statistic_profile_attributes][gender]'].$dirty && userForm['user[statistic_profile_attributes][gender]'].$error.required" translate>{{ 'gender_is_required' }}</span>
       </div>
@@ -65,7 +65,7 @@
 
       <div class="form-group" ng-class="{'has-error': userForm['user[username]'].$dirty && userForm['user[username]'].$invalid}">
         <div class="input-group">
-          <span class="input-group-addon"><i class="fa fa-user"></i> <span class="exponent"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
+          <span class="input-group-addon help-cursor" title="{{ 'used_for_profile' | translate }}"><i class="fa fa-user"></i> <span class="exponent"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
           </span>
           <input type="text"
                  name="user[username]"
@@ -83,7 +83,7 @@
 
       <div class="form-group" ng-class="{'has-error': userForm['user[profile_attributes][last_name]'].$dirty && userForm['user[profile_attributes][last_name]'].$invalid}">
         <div class="input-group">
-          <span class="input-group-addon"><i class="fa fa-user"></i> <span class="exponent"><i class="fa fa-asterisk" aria-hidden="true"></i></span></span>
+          <span class="input-group-addon help-cursor" title="{{ 'used_for_invoicing' | translate }}"><i class="fa fa-user"></i> <span class="exponent"><i class="fa fa-asterisk" aria-hidden="true"></i></span></span>
           <input type="text"
                  name="user[profile_attributes][last_name]"
                  ng-model="user.profile.last_name"
@@ -98,7 +98,7 @@
 
       <div class="form-group" ng-class="{'has-error': userForm['user[profile_attributes][first_name]'].$dirty && userForm['user[profile_attributes][first_name]'].$invalid}">
         <div class="input-group">
-          <span class="input-group-addon"><i class="fa fa-user"></i> <span class="exponent"><i class="fa fa-asterisk" aria-hidden="true"></i></span></span>
+          <span class="input-group-addon help-cursor" title="{{ 'used_for_invoicing' | translate }}"><i class="fa fa-user"></i> <span class="exponent"><i class="fa fa-asterisk" aria-hidden="true"></i></span></span>
           <input type="text"
                  name="user[profile_attributes][first_name]"
                  ng-model="user.profile.first_name"
@@ -113,7 +113,7 @@
 
       <div class="form-group" ng-class="{'has-error': userForm['user[email]'].$dirty && userForm['user[email]'].$invalid}">
         <div class="input-group">
-          <span class="input-group-addon"><i class="fa fa-envelope"></i> <span class="exponent"><i class="fa fa-asterisk" aria-hidden="true"></i></span></span>
+          <span class="input-group-addon help-cursor" title="{{ 'used_for_invoicing' | translate }}"><i class="fa fa-envelope"></i> <span class="exponent"><i class="fa fa-asterisk" aria-hidden="true"></i></span></span>
           <input type="email"
                  name="user[email]"
                  ng-model="user.email"
@@ -169,7 +169,7 @@
 
       <div class="form-group" ng-if="user.invoicing_profile.organization" ng-class="{'has-error': userForm['user[invoicing_profile_attributes][organization_attributes][name]'].$dirty && userForm['user[invoicing_profile_attributes][organization_attributes][name]'].$invalid}">
         <div class="input-group">
-          <span class="input-group-addon"><i class="fa fa-building-o"></i> <span class="exponent"><i class="fa fa-asterisk" aria-hidden="true"></i></span></span>
+          <span class="input-group-addon help-cursor" title="{{ 'used_for_invoicing' | translate }}"><i class="fa fa-building-o"></i> <span class="exponent"><i class="fa fa-asterisk" aria-hidden="true"></i></span></span>
           <input type="hidden"
                  name="user[invoicing_profile_attributes][organization_attributes][id]"
                  ng-value="user.invoicing_profile.organization.id" />
@@ -186,7 +186,7 @@
 
       <div class="form-group" ng-if="user.invoicing_profile.organization" ng-class="{'has-error': userForm['user[invoicing_profile_attributes][organization_attributes][address_attributes][address]'].$dirty && userForm['user[invoicing_profile_attributes][organization_attributes][address_attributes][address]'].$invalid}">
         <div class="input-group">
-          <span class="input-group-addon"><i class="fa fa-map-marker"></i> <span class="exponent"><i class="fa fa-asterisk" aria-hidden="true"></i></span></span>
+          <span class="input-group-addon help-cursor" title="{{ 'used_for_invoicing' | translate }}"><i class="fa fa-map-marker"></i> <span class="exponent"><i class="fa fa-asterisk" aria-hidden="true"></i></span></span>
           <input type="hidden"
                  name="user[invoicing_profile_attributes][organization_attributes][address_attributes][id]"
                  ng-value="user.invoicing_profile.organization.address.id" />
@@ -203,7 +203,7 @@
 
       <div class="form-group" ng-class="{'has-error': userForm['user[statistic_profile_attributes][birthday]'].$dirty && userForm['user[statistic_profile_attributes][birthday]'].$invalid}">
         <div class="input-group">
-          <span class="input-group-addon"><i class="fa fa-calendar-o"></i> <span class="exponent"><i class="fa fa-asterisk" aria-hidden="true"></i></span></span>
+          <span class="input-group-addon help-cursor" title="{{ 'used_for_statistics' | translate }}"><i class="fa fa-calendar-o"></i> <span class="exponent"><i class="fa fa-asterisk" aria-hidden="true"></i></span></span>
           <input type="text"
                  id="user_birthday"
                  class="form-control"
@@ -224,7 +224,7 @@
 
       <div class="form-group">
         <div class="input-group">
-          <span class="input-group-addon"><i class="fa fa-map-marker"></i> </span>
+          <span class="input-group-addon help-cursor" title="{{ 'used_for_invoicing' | translate }}"><i class="fa fa-map-marker"></i> </span>
           <input type="hidden"
                  name="user[invoicing_profile_attributes][address_attributes][id]"
                  ng-value="user.invoicing_profile.address.id" />
@@ -240,7 +240,7 @@
 
       <div class="form-group" ng-class="{'has-error': userForm['user[profile_attributes][phone]'].$dirty && userForm['user[profile_attributes][phone]'].$invalid}">
         <div class="input-group">
-          <span class="input-group-addon"><i class="fa fa-phone"></i> <span class="exponent"><i class="fa fa-asterisk" aria-hidden="true"></i></span></span>
+          <span class="input-group-addon help-cursor" title="{{ 'used_for_reservation' | translate }}"><i class="fa fa-phone"></i> <span class="exponent"><i class="fa fa-asterisk" aria-hidden="true"></i></span></span>
           <input type="text"
                  name="user[profile_attributes][phone]"
                  ng-model="user.profile.phone"
@@ -255,7 +255,7 @@
 
       <div class="form-group" ng-class="{'has-error': userForm['user[profile_attributes][website]'].$dirty && userForm['user[profile_attributes][website]'].$invalid}">
         <div class="input-group">
-          <span class="input-group-addon"><i class="fa fa-globe"></i> </span>
+          <span class="input-group-addon help-cursor" title="{{ 'used_for_profile' | translate }}"><i class="fa fa-globe"></i> </span>
           <input type="url"
                  name="user[profile_attributes][website]"
                  ng-model="user.profile.website"
@@ -269,7 +269,7 @@
 
       <div class="form-group" ng-class="{'has-error': userForm['user[profile_attributes][job]'].$dirty && userForm['user[profile_attributes][job]'].$invalid}">
         <div class="input-group">
-          <span class="input-group-addon"><i class="fa fa-briefcase"></i> </span>
+          <span class="input-group-addon help-cursor" title="{{ 'used_for_profile' | translate }}"><i class="fa fa-briefcase"></i> </span>
           <input type="text"
                  name="user[profile_attributes][job]"
                  ng-model="user.profile.job"
@@ -281,7 +281,7 @@
       </div>
 
       <div class="form-group">
-        <label for="user_interest" translate>{{ 'interests' }}</label>
+        <label for="user_interest" class="help-cursor" title="{{ 'used_for_profile' | translate }}" translate>{{ 'interests' }}</label>
         <textarea name="user[profile_attributes][interest]"
                   ng-model="user.profile.interest"
                   rows="5"
@@ -292,7 +292,7 @@
       </div>
 
       <div class="form-group">
-        <label for="user_software_mastered" translate>{{ 'CAD_softwares_mastered' }}</label>
+        <label for="user_software_mastered" class="help-cursor" title="{{ 'used_for_profile' | translate }}" translate>{{ 'CAD_softwares_mastered' }}</label>
         <textarea name="user[profile_attributes][software_mastered]"
                   ng-model="user.profile.software_mastered"
                   rows="5"
@@ -304,7 +304,7 @@
 
       <!-- allow contact-->
       <div class="form-group">
-        <label for="allowContact" translate>{{ 'i_authorize_Fablab_users_registered_on_the_site_to_contact_me' }}</label>
+        <label for="allowContact" class="help-cursor" title="{{ 'public_profile' | translate }}" translate>{{ 'i_authorize_Fablab_users_registered_on_the_site_to_contact_me' }}</label>
         <input bs-switch
                ng-model="user.is_allow_contact"
                id="allowContact"
@@ -333,7 +333,7 @@
       <div id="social" ng-init="social={}">
         <div class="form-group" ng-show="social.facebook || user.profile.facebook" ng-class="{'has-error': userForm['user[profile_attributes][facebook]'].$dirty && userForm['user[profile_attributes][facebook]'].$invalid}">
           <div class="input-group">
-            <span class="input-group-addon"><i class="fa fa-facebook"></i></span>
+            <span class="input-group-addon help-cursor" title="{{ 'used_for_profile' | translate }}"><i class="fa fa-facebook"></i></span>
             <input type="text"
                    name="user[profile_attributes][facebook]"
                    ng-model="user.profile.facebook"
@@ -348,7 +348,7 @@
 
         <div class="form-group" ng-show="social.twitter || user.profile.twitter" ng-class="{'has-error': userForm['user[profile_attributes][twitter]'].$dirty && userForm['user[profile_attributes][twitter]'].$invalid}">
           <div class="input-group">
-            <span class="input-group-addon"><i class="fa fa-twitter"></i></span>
+            <span class="input-group-addon help-cursor" title="{{ 'used_for_profile' | translate }}"><i class="fa fa-twitter"></i></span>
             <input type="text"
                    name="user[profile_attributes][twitter]"
                    ng-model="user.profile.twitter"
@@ -363,7 +363,7 @@
 
         <div class="form-group" ng-show="social.google_plus || user.profile.google_plus" ng-class="{'has-error': userForm['user[profile_attributes][google_plus]'].$dirty && userForm['user[profile_attributes][google_plus]'].$invalid}">
           <div class="input-group">
-            <span class="input-group-addon"><i class="fa fa-google-plus"></i></span>
+            <span class="input-group-addon help-cursor" title="{{ 'used_for_profile' | translate }}"><i class="fa fa-google-plus"></i></span>
             <input type="text"
                    name="user[profile_attributes][google_plus]"
                    ng-model="user.profile.google_plus"
@@ -378,7 +378,7 @@
 
         <div class="form-group" ng-show="social.viadeo || user.profile.viadeo" ng-class="{'has-error': userForm['user[profile_attributes][viadeo]'].$dirty && userForm['user[profile_attributes][viadeo]'].$invalid}">
           <div class="input-group">
-            <span class="input-group-addon"><i class="fa fa-viadeo"></i></span>
+            <span class="input-group-addon help-cursor" title="{{ 'used_for_profile' | translate }}"><i class="fa fa-viadeo"></i></span>
             <input type="text"
                    name="user[profile_attributes][viadeo]"
                    ng-model="user.profile.viadeo"
@@ -393,7 +393,7 @@
 
         <div class="form-group" ng-show="social.linkedin || user.profile.linkedin" ng-class="{'has-error': userForm['user[profile_attributes][linkedin]'].$dirty && userForm['user[profile_attributes][linkedin]'].$invalid}">
           <div class="input-group">
-            <span class="input-group-addon"><i class="fa fa-linkedin"></i></span>
+            <span class="input-group-addon help-cursor" title="{{ 'used_for_profile' | translate }}"><i class="fa fa-linkedin"></i></span>
             <input type="text"
                    name="user[profile_attributes][linkedin]"
                    ng-model="user.profile.linkedin"
@@ -408,7 +408,7 @@
 
         <div class="form-group" ng-show="social.instagram || user.profile.instragram" ng-class="{'has-error': userForm['user[profile_attributes][instagram]'].$dirty && userForm['user[profile_attributes][instagram]'].$invalid}">
           <div class="input-group">
-            <span class="input-group-addon"><i class="fa fa-instagram"></i></span>
+            <span class="input-group-addon help-cursor" title="{{ 'used_for_profile' | translate }}"><i class="fa fa-instagram"></i></span>
             <input type="text"
                    name="user[profile_attributes][instagram]"
                    ng-model="user.profile.instagram"
@@ -423,7 +423,7 @@
 
         <div class="form-group" ng-show="social.youtube || user.profile.youtube" ng-class="{'has-error': userForm['user[profile_attributes][youtube]'].$dirty && userForm['user[profile_attributes][youtube]'].$invalid}">
           <div class="input-group">
-            <span class="input-group-addon"><i class="fa fa-youtube"></i></span>
+            <span class="input-group-addon help-cursor" title="{{ 'used_for_profile' | translate }}"><i class="fa fa-youtube"></i></span>
             <input type="text"
                    name="user[profile_attributes][youtube]"
                    ng-model="user.profile.youtube"
@@ -438,7 +438,7 @@
 
         <div class="form-group" ng-show="social.vimeo || user.profile.vimeo" ng-class="{'has-error': userForm['user[profile_attributes][vimeo]'].$dirty && userForm['user[profile_attributes][vimeo]'].$invalid}">
           <div class="input-group">
-            <span class="input-group-addon"><i class="fa fa-vimeo"></i></span>
+            <span class="input-group-addon help-cursor" title="{{ 'used_for_profile' | translate }}"><i class="fa fa-vimeo"></i></span>
             <input type="text"
                    name="user[profile_attributes][vimeo]"
                    ng-model="user.profile.vimeo"
@@ -453,7 +453,7 @@
 
         <div class="form-group" ng-show="social.dailymotion || user.profile.dailymotion" ng-class="{'has-error': userForm['user[profile_attributes][dailymotion]'].$dirty && userForm['user[profile_attributes][dailymotion]'].$invalid}">
           <div class="input-group">
-            <span class="input-group-addon"><img src="<%= asset_path('social/dailymotion.png') %>" alt="d" class="fa-img"/></span>
+            <span class="input-group-addon help-cursor" title="{{ 'used_for_profile' | translate }}"><img src="<%= asset_path('social/dailymotion.png') %>" alt="d" class="fa-img"/></span>
             <input type="text"
                    name="user[profile_attributes][dailymotion]"
                    ng-model="user.profile.dailymotion"
@@ -469,7 +469,7 @@
 
         <div class="form-group" ng-show="social.github || user.profile.github" ng-class="{'has-error': userForm['user[profile_attributes][github]'].$dirty && userForm['user[profile_attributes][github]'].$invalid}">
           <div class="input-group">
-            <span class="input-group-addon"><i class="fa fa-github"></i></span>
+            <span class="input-group-addon help-cursor" title="{{ 'used_for_profile' | translate }}"><i class="fa fa-github"></i></span>
             <input type="text"
                    name="user[profile_attributes][github]"
                    ng-model="user.profile.github"
@@ -484,7 +484,7 @@
 
         <div class="form-group" ng-show="social.echosciences || user.profile.echosciences" ng-class="{'has-error': userForm['user[profile_attributes][echosciences]'].$dirty && userForm['user[profile_attributes][echosciences]'].$invalid}">
           <div class="input-group">
-            <span class="input-group-addon"><img src="<%= asset_path('social/echosciences.png') %>" alt="d" class="fa-img"/></span>
+            <span class="input-group-addon help-cursor" title="{{ 'used_for_profile' | translate }}"><img src="<%= asset_path('social/echosciences.png') %>" alt="d" class="fa-img"/></span>
             <input type="text"
                    name="user[profile_attributes][echosciences]"
                    ng-model="user.profile.echosciences"
@@ -499,7 +499,7 @@
 
         <div class="form-group" ng-show="social.pinterest || user.profile.pinterest" ng-class="{'has-error': userForm['user[profile_attributes][pinterest]'].$dirty && userForm['user[profile_attributes][pinterest]'].$invalid}">
           <div class="input-group">
-            <span class="input-group-addon"><i class="fa fa-pinterest"></i></span>
+            <span class="input-group-addon help-cursor" title="{{ 'used_for_profile' | translate }}"><i class="fa fa-pinterest"></i></span>
             <input type="text"
                    name="user[profile_attributes][pinterest]"
                    ng-model="user.profile.pinterest"
@@ -514,7 +514,7 @@
 
         <div class="form-group" ng-show="social.lastfm || user.profile.lastfm" ng-class="{'has-error': userForm['user[profile_attributes][lastfm]'].$dirty && userForm['user[profile_attributes][lastfm]'].$invalid}">
           <div class="input-group">
-            <span class="input-group-addon"><i class="fa fa-lastfm"></i></span>
+            <span class="input-group-addon help-cursor" title="{{ 'used_for_profile' | translate }}"><i class="fa fa-lastfm"></i></span>
             <input type="text"
                    name="user[profile_attributes][lastfm]"
                    ng-model="user.profile.lastfm"
@@ -529,7 +529,7 @@
 
         <div class="form-group" ng-show="social.flickr || user.profile.flickr" ng-class="{'has-error': userForm['user[profile_attributes][flickr]'].$dirty && userForm['user[profile_attributes][flickr]'].$invalid}">
           <div class="input-group">
-            <span class="input-group-addon"><i class="fa fa-flickr"></i></span>
+            <span class="input-group-addon help-cursor" title="{{ 'used_for_profile' | translate }}"><i class="fa fa-flickr"></i></span>
             <input type="text"
                    name="user[profile_attributes][flickr]"
                    ng-model="user.profile.flickr"
diff --git a/app/assets/templates/shared/signupModal.html.erb b/app/assets/templates/shared/signupModal.html.erb
index e8433a206..a3677b710 100644
--- a/app/assets/templates/shared/signupModal.html.erb
+++ b/app/assets/templates/shared/signupModal.html.erb
@@ -22,7 +22,7 @@
                      ng-model="user.statistic_profile_attributes.gender"
                      value="false"/> {{ 'woman' | translate }}
             </label>
-            <span class="exponent m-l-xs"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
+            <span class="exponent m-l-xs help-cursor" title="{{ 'used_for_statistics' | translate }}"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
             <span class="help-block" ng-show="signupForm.gender.$dirty && signupForm.gender.$error.required" translate>{{ 'gender_is_required'}}</span>
           </div>
         </div>
@@ -36,7 +36,7 @@
                    class="form-control"
                    placeholder="{{ 'your_first_name' | translate }}"
                    required>
-            <span class="exponent m-l-xs"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
+            <span class="exponent m-l-xs help-cursor" title="{{ 'used_for_invoicing' | translate }}"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
             <span class="help-block" ng-show="signupForm.first_name.$dirty && signupForm.first_name.$error.required" translate>{{ 'first_name_is_required' }}</span>
           </div>
           <div class="m-b visible-xs"></div>
@@ -47,7 +47,7 @@
                    class="form-control"
                    placeholder="{{ 'your_surname' | translate }}"
                    required>
-            <span class="exponent m-l-xs"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
+            <span class="exponent m-l-xs help-cursor" title="{{ 'used_for_invoicing' | translate }}"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
             <span class="help-block" ng-show="signupForm.last_name.$dirty && signupForm.last_name.$error.required" translate>{{ 'surname_is_required' }}</span>
           </div>
         </div>
@@ -63,7 +63,7 @@
                      placeholder="{{ 'your_pseudonym' | translate }}"
                      required>
             </div>
-            <span class="exponent"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
+            <span class="exponent help-cursor" title="{{ 'used_for_profile' | translate }}"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
             <span class="help-block" ng-show="signupForm.username.$dirty && signupForm.username.$error.required" translate>{{ 'pseudonym_is_required' }}</span>
           </div>
         </div>
@@ -79,7 +79,7 @@
                      placeholder="{{ 'your_email_address' | translate }}"
                      required>
             </div>
-            <span class="exponent"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
+            <span class="exponent help-cursor" title="{{ 'used_for_invoicing' | translate }}"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
             <span class="help-block" ng-show="signupForm.email.$dirty && signupForm.email.$error.required" translate>{{ 'email_is_required' }}</span>
           </div>
         </div>
@@ -142,7 +142,7 @@
                      placeholder="{{ 'name_of_your_organization' | translate }}"
                      ng-required="user.organization">
             </div>
-            <span class="exponent"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
+            <span class="exponent help-cursor" title="{{ 'used_for_invoicing' | translate }}"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
             <span class="help-block" ng-show="signupForm.organization_name.$dirty && signupForm.organization_name.$error.required" translate>{{ 'organization_name_is_required' }}</span>
           </div>
         </div>
@@ -158,7 +158,7 @@
                      placeholder="{{ 'address_of_your_organization' | translate }}"
                      ng-required="user.organization">
             </div>
-            <span class="exponent"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
+            <span class="exponent help-cursor" title="{{ 'used_for_invoicing' | translate }}"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
             <span class="help-block" ng-show="signupForm.organization_address.$dirty && signupForm.organization_address.$error.required" translate>{{ 'organization_address_is_required' }}</span>
           </div>
         </div>
@@ -169,7 +169,7 @@
               <select ng-model="user.group_id" class="form-control" name="group_id" ng-options="g.id as g.name for g in groups" required>
                 <option value="" translate>{{ 'your_user_s_profile' }}</option>
               </select>
-              <span class="exponent exponent-select"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
+              <span class="exponent exponent-select help-cursor" title="{{ 'used_for_invoicing' | translate }}"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
             </div>
             <span class="help-block" ng-show="signupForm.group_id.$dirty && signupForm.group_id.$error.required" translate>{{ 'user_s_profile_is_required' }}</span>
           </div>
@@ -190,7 +190,7 @@
                      ng-click="openDatePicker($event)"
                      required/>
             </div>
-            <span class="exponent"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
+            <span class="exponent help-cursor" title="{{ 'used_for_statistics' | translate }}"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
             <span class="help-block" ng-show="signupForm.birthday.$dirty && signupForm.birthday.$error.required" translate>{{ 'birth_date_is_required' }}</span>
           </div>
         </div>
@@ -206,7 +206,7 @@
                      placeholder="{{ 'phone_number' | translate }}"
                      required>
             </div>
-            <span class="exponent"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
+            <span class="exponent help-cursor" title="{{ 'used_for_reservation' | translate }}"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
             <span class="help-block" ng-show="signupForm.phone.$dirty && signupForm.phone.$error.required" translate>{{ 'phone_number_is_required' }}</span>
           </div>
         </div>
@@ -218,7 +218,7 @@
                    id="is_allow_contact"
                    ng-model="user.is_allow_contact"
                    value="true"/>
-            <label for="is_allow_contact" translate>{{ 'i_authorize_Fablab_users_registered_on_the_site_to_contact_me' }}</label>
+            <label for="is_allow_contact" class="help-cursor" title="{{ 'public_profile' | translate }}" translate>{{ 'i_authorize_Fablab_users_registered_on_the_site_to_contact_me' }}</label>
           </div>
         </div>
 
diff --git a/app/views/api/notifications/_notify_admin_slot_is_canceled.json.jbuilder b/app/views/api/notifications/_notify_admin_slot_is_canceled.json.jbuilder
index e90614b13..6063a19ef 100644
--- a/app/views/api/notifications/_notify_admin_slot_is_canceled.json.jbuilder
+++ b/app/views/api/notifications/_notify_admin_slot_is_canceled.json.jbuilder
@@ -1,5 +1,5 @@
 json.title notification.notification_type
 json.description t('.USER_s_reservation_on_the_DATE_was_cancelled_remember_to_generate_a_refund_invoice_if_applicable_html',
-                   USER: notification.attached_object.reservation.user.profile.full_name,
+                   USER: notification.attached_object.reservation.user&.profile&.full_name,
                    DATE: I18n.l(notification.attached_object.start_at, format: :long))
 json.url notification_url(notification, format: :json)
diff --git a/app/views/api/notifications/_notify_admin_subscription_canceled.json.jbuilder b/app/views/api/notifications/_notify_admin_subscription_canceled.json.jbuilder
index 85bafc10c..c4cdc21aa 100644
--- a/app/views/api/notifications/_notify_admin_subscription_canceled.json.jbuilder
+++ b/app/views/api/notifications/_notify_admin_subscription_canceled.json.jbuilder
@@ -1,4 +1,4 @@
 json.title notification.notification_type
 json.description t('.USER_s_subscription_has_been_cancelled',
-                   USER: notification.attached_object.user.profile.full_name)
+                   USER: notification.attached_object.user&.profile&.full_name)
 json.url notification_url(notification, format: :json)
diff --git a/app/views/api/notifications/_notify_admin_subscription_extended.json.jbuilder b/app/views/api/notifications/_notify_admin_subscription_extended.json.jbuilder
index 930d87cb8..f2dd3bf82 100644
--- a/app/views/api/notifications/_notify_admin_subscription_extended.json.jbuilder
+++ b/app/views/api/notifications/_notify_admin_subscription_extended.json.jbuilder
@@ -2,7 +2,7 @@ json.title notification.notification_type
 json.description _t('.subscription_PLAN_of_the_member_USER_has_been_extended_FREE_until_DATE_html',
                     {
                         PLAN: notification.attached_object.plan.name,
-                        USER: notification.attached_object.user.profile.full_name,
+                        USER: notification.attached_object.user&.profile&.full_name,
                         FREE: notification.get_meta_data(:free_days).to_s,
                         DATE: I18n.l(notification.attached_object.expired_at.to_date)
                     }) # messageFormat
diff --git a/app/views/api/notifications/_notify_admin_subscription_is_expired.json.jbuilder b/app/views/api/notifications/_notify_admin_subscription_is_expired.json.jbuilder
index 293cf4a91..eda72542f 100644
--- a/app/views/api/notifications/_notify_admin_subscription_is_expired.json.jbuilder
+++ b/app/views/api/notifications/_notify_admin_subscription_is_expired.json.jbuilder
@@ -1,4 +1,4 @@
 json.title notification.notification_type
 json.description t('.USER_s_subscription_has_expired',
-                   USER:notification.attached_object.user.profile.full_name)
+                   USER:notification.attached_object.user&.profile&.full_name)
 json.url notification_url(notification, format: :json)
diff --git a/app/views/api/notifications/_notify_admin_subscription_will_expire_in_7_days.json.jbuilder b/app/views/api/notifications/_notify_admin_subscription_will_expire_in_7_days.json.jbuilder
index 746f21055..f521f42f0 100644
--- a/app/views/api/notifications/_notify_admin_subscription_will_expire_in_7_days.json.jbuilder
+++ b/app/views/api/notifications/_notify_admin_subscription_will_expire_in_7_days.json.jbuilder
@@ -1,4 +1,4 @@
 json.title notification.notification_type
 json.description t('.USER_s_subscription_will_expire_in_7_days',
-                   USER: notification.attached_object.user.profile.full_name)
+                   USER: notification.attached_object.user&.profile&.full_name)
 json.url notification_url(notification, format: :json)
diff --git a/app/views/api/notifications/_notify_admin_user_group_changed.json.jbuilder b/app/views/api/notifications/_notify_admin_user_group_changed.json.jbuilder
index 30093c2c5..5400a1638 100644
--- a/app/views/api/notifications/_notify_admin_user_group_changed.json.jbuilder
+++ b/app/views/api/notifications/_notify_admin_user_group_changed.json.jbuilder
@@ -1,7 +1,7 @@
 json.title notification.notification_type
 json.description _t('.user_NAME_changed_his_group_html',
                     {
-                        NAME: notification.attached_object.profile.full_name,
-                        GENDER: bool_to_sym(notification.attached_object.statistic_profile.gender)
+                        NAME: notification.attached_object&.profile&.full_name,
+                        GENDER: bool_to_sym(notification.attached_object&.statistic_profile&.gender)
                     }) # messageFormat
 json.url notification_url(notification, format: :json)
diff --git a/app/views/api/notifications/_notify_admin_user_merged.json.jbuilder b/app/views/api/notifications/_notify_admin_user_merged.json.jbuilder
index 9409ec4ec..8f713c460 100644
--- a/app/views/api/notifications/_notify_admin_user_merged.json.jbuilder
+++ b/app/views/api/notifications/_notify_admin_user_merged.json.jbuilder
@@ -1,9 +1,9 @@
 json.title notification.notification_type
 json.description _t('.user_NAME_has_merged_his_account_with_the_one_imported_from_PROVIDER_UID_html',
                     {
-                        NAME: notification.attached_object.profile.full_name,
-                        GENDER: bool_to_sym(notification.attached_object.statistic_profile.gender),
-                        PROVIDER: notification.attached_object.provider,
-                        UID: notification.attached_object.uid
+                        NAME: notification.attached_object&.profile&.full_name,
+                        GENDER: bool_to_sym(notification.attached_object&.statistic_profile&.gender),
+                        PROVIDER: notification.attached_object&.provider,
+                        UID: notification.attached_object&.uid
                     }) # messageFormat
 json.url notification_url(notification, format: :json)
diff --git a/app/views/api/notifications/_notify_admin_user_wallet_is_credited.json.jbuilder b/app/views/api/notifications/_notify_admin_user_wallet_is_credited.json.jbuilder
index 6b692d542..f92efffae 100644
--- a/app/views/api/notifications/_notify_admin_user_wallet_is_credited.json.jbuilder
+++ b/app/views/api/notifications/_notify_admin_user_wallet_is_credited.json.jbuilder
@@ -2,6 +2,6 @@ json.title notification.notification_type
 amount = notification.attached_object.amount
 json.description t('.wallet_is_credited',
                     AMOUNT: number_to_currency(amount),
-                    USER: notification.attached_object.wallet.user.profile.full_name,
-                    ADMIN: notification.attached_object.user.profile.full_name)
+                    USER: notification.attached_object.wallet.user&.profile&.full_name,
+                    ADMIN: notification.attached_object.user&.profile&.full_name)
 json.url notification_url(notification, format: :json)
diff --git a/app/views/api/notifications/_notify_admin_when_user_is_created.json.jbuilder b/app/views/api/notifications/_notify_admin_when_user_is_created.json.jbuilder
index caeeefbbf..e1779b52d 100644
--- a/app/views/api/notifications/_notify_admin_when_user_is_created.json.jbuilder
+++ b/app/views/api/notifications/_notify_admin_when_user_is_created.json.jbuilder
@@ -1,5 +1,5 @@
 json.title notification.notification_type
 json.description t('.a_new_user_account_has_been_created_NAME_EMAIL_html',
-                   NAME: notification.attached_object.profile.full_name,
-                   EMAIL: notification.attached_object.email)
+                   NAME: notification.attached_object&.profile&.full_name,
+                   EMAIL: notification.attached_object&.email)
 json.url notification_url(notification, format: :json)
diff --git a/app/views/api/notifications/_notify_partner_subscribed_plan.json.jbuilder b/app/views/api/notifications/_notify_partner_subscribed_plan.json.jbuilder
index 90fadd561..a02aace6e 100644
--- a/app/views/api/notifications/_notify_partner_subscribed_plan.json.jbuilder
+++ b/app/views/api/notifications/_notify_partner_subscribed_plan.json.jbuilder
@@ -2,6 +2,6 @@ json.title notification.notification_type
 json.description t('.subscription_partner_PLAN_has_been_subscribed_by_USER_html',
                     {
                         PLAN: notification.attached_object.plan.name,
-                        USER: notification.attached_object.user.profile.full_name
+                        USER: notification.attached_object.user&.profile&.full_name
                     }) # messageFormat
 json.url notification_url(notification, format: :json)
diff --git a/app/views/api/notifications/_notify_project_author_when_collaborator_valid.json.jbuilder b/app/views/api/notifications/_notify_project_author_when_collaborator_valid.json.jbuilder
index d5dc45864..11671526e 100644
--- a/app/views/api/notifications/_notify_project_author_when_collaborator_valid.json.jbuilder
+++ b/app/views/api/notifications/_notify_project_author_when_collaborator_valid.json.jbuilder
@@ -1,5 +1,5 @@
 json.title notification.notification_type
 json.description t('.USER_became_collaborator_of_your_project',
-                    USER: notification.attached_object.user.profile.full_name) +
+                    USER: notification.attached_object.user&.profile&.full_name) +
                  "<a href='/#!/projects/#{notification.attached_object.project.slug}'><strong><em> #{notification.attached_object.project.name}</em></strong></a>."
 json.url notification_url(notification, format: :json)
diff --git a/config/locales/app.logged.en.yml b/config/locales/app.logged.en.yml
index 67776c1d8..38d95d077 100644
--- a/config/locales/app.logged.en.yml
+++ b/config/locales/app.logged.en.yml
@@ -55,6 +55,11 @@ en:
           no_further_access_to_projects: "Your published projects will be anonymized and you won't get any further ability to edit them."
           your_user_account_has_been_successfully_deleted_goodbye: "Your user account has been successfully deleted. Goodbye."
           an_error_occured_preventing_your_account_from_being_deleted: "An error occurred, preventing your account from being deleted."
+          used_for_statistics: "This data will be used for statistical purposes"
+          used_for_invoicing: "This data will be used for billing purposes"
+          used_for_reservation: "This data will be used in case of change on one of your bookings"
+          used_for_profile: "This data will only be displayed on your profile"
+          public_profile: "You will have a public profile and other users will be able to associate you in their projects"
         projects:
           # dashboard: my projects
           you_dont_have_any_projects: "You don't have any projects."
diff --git a/config/locales/app.logged.es.yml b/config/locales/app.logged.es.yml
index 439b7c82f..13de8affd 100644
--- a/config/locales/app.logged.es.yml
+++ b/config/locales/app.logged.es.yml
@@ -55,6 +55,11 @@ es:
           no_further_access_to_projects: "Your published projects will be anonymized and you won't get any further ability to edit them."   # missing translation
           your_user_account_has_been_successfully_deleted_goodbye: "Su cuenta ha sido eliminada con éxito. Adiós"
           an_error_occured_preventing_your_account_from_being_deleted: "Un error inesperado impidió que su cuenta fuese eliminada."
+          used_for_statistics: "This data will be used for statistical purposes"                   # translation missing
+          used_for_invoicing: "This data will be used for billing purposes"                        # translation missing
+          used_for_reservation: "This data will be used in case of change on one of your bookings" # translation missing
+          used_for_profile: "This data will only be displayed on your profile"                     # translation missing
+          public_profile: "You will have a public profile and other users will be able to associate you in their projects"  # translation missing
         projects:
           # dashboard: my projects
           you_dont_have_any_projects: "Aún no tiene proyectos."
diff --git a/config/locales/app.logged.fr.yml b/config/locales/app.logged.fr.yml
index c13a57805..e12f8896c 100644
--- a/config/locales/app.logged.fr.yml
+++ b/config/locales/app.logged.fr.yml
@@ -55,6 +55,11 @@ fr:
           no_further_access_to_projects: "Vos projets publiés seront anonymisés et vous n'aurez plus de possibilité de les modifier."
           your_user_account_has_been_successfully_deleted_goodbye: "Votre compte utilisateur a bien été supprimé. Au revoir."
           an_error_occured_preventing_your_account_from_being_deleted: "Une erreur est survenue qui a empêché la suppression de votre compte."
+          used_for_statistics: "Cette donnée sera utilisée à des fins statistiques"
+          used_for_invoicing: "Cette donnée sera utilisée à des fins de facturation"
+          used_for_reservation: "Cette donnée sera utilisée en cas de changement sur une de vos réservations"
+          used_for_profile: "Cette donnée sera seulement affichée sur votre profil"
+          public_profile: "Vous aurez un profil public et les autres utilisateurs pourront vous associer à leurs projets"
         projects:
           # tableau de bord : mes projets
           you_dont_have_any_projects: "Vous n'avez aucun projet."
diff --git a/config/locales/app.logged.pt.yml b/config/locales/app.logged.pt.yml
index edd9ddec9..8d46fcb69 100755
--- a/config/locales/app.logged.pt.yml
+++ b/config/locales/app.logged.pt.yml
@@ -55,6 +55,11 @@ pt:
           no_further_access_to_projects: "Your published projects will be anonymized and you won't get any further ability to edit them."   # missing translation
           your_user_account_has_been_successfully_deleted_goodbye: "Sua conta de usuário foi excluída com êxito. Até mais."
           an_error_occured_preventing_your_account_from_being_deleted: "Ocorreu um erro, impedindo que sua conta fosse excluída."
+          used_for_statistics: "This data will be used for statistical purposes"                                                            # translation missing
+          used_for_invoicing: "This data will be used for billing purposes"                                                                 # translation missing
+          used_for_reservation: "This data will be used in case of change on one of your bookings"                                          # translation missing
+          used_for_profile: "This data will only be displayed on your profile"                                                              # translation missing
+          public_profile: "You will have a public profile and other users will be able to associate you in their projects"                  # translation missing
         projects:
           # dashboard: my projects
           you_dont_have_any_projects: "Você não tem nenhum projeto."
diff --git a/config/locales/app.public.en.yml b/config/locales/app.public.en.yml
index 764ae1366..ff8972ec5 100644
--- a/config/locales/app.public.en.yml
+++ b/config/locales/app.public.en.yml
@@ -87,6 +87,11 @@ en:
         _the_fablab_policy: "the FabLab policy"
         field_required: "Field required"
         unexpected_error_occurred: "An unexpected error occurred. Please try again later."
+        used_for_statistics: "This data will be used for statistical purposes"
+        used_for_invoicing: "This data will be used for billing purposes"
+        used_for_reservation: "This data will be used in case of change on one of your bookings"
+        used_for_profile: "This data will only be displayed on your profile"
+        public_profile: "You will have a public profile and other users will be able to associate you in their projects"
 
         # password modification modal
         change_your_password: "Change your password"
diff --git a/config/locales/app.public.es.yml b/config/locales/app.public.es.yml
index a8bba4339..c25e808ae 100644
--- a/config/locales/app.public.es.yml
+++ b/config/locales/app.public.es.yml
@@ -84,8 +84,13 @@ es:
         i_accept_to_receive_information_from_the_fablab: "Acepto recibir información del FabLab"
         i_ve_read_and_i_accept_: "He leido y acepto"
         _the_fablab_policy: "la política de FabLab"
-        field_required: "Field required"                                                   # translation missing
-        unexpected_error_occurred: "An unexpected error occurred. Please try again later." # translation missing
+        field_required: "Field required"                                                         # translation missing
+        unexpected_error_occurred: "An unexpected error occurred. Please try again later."       # translation missing
+        used_for_statistics: "This data will be used for statistical purposes"                   # translation missing
+        used_for_invoicing: "This data will be used for billing purposes"                        # translation missing
+        used_for_reservation: "This data will be used in case of change on one of your bookings" # translation missing
+        used_for_profile: "This data will only be displayed on your profile"                     # translation missing
+        public_profile: "You will have a public profile and other users will be able to associate you in their projects"  # translation missing
 
         # password modification modal
         change_your_password: "Cambiar contraseña"
diff --git a/config/locales/app.public.fr.yml b/config/locales/app.public.fr.yml
index 17beb74f9..a52a74e18 100644
--- a/config/locales/app.public.fr.yml
+++ b/config/locales/app.public.fr.yml
@@ -87,6 +87,11 @@ fr:
         _the_fablab_policy: "la charte d'utilisation du Fab Lab"
         field_required: "Champ requis"
         unexpected_error_occurred: "Une erreur inattendue s'est produite. Veuillez réessayer ultérieurement."
+        used_for_statistics: "Cette donnée sera utilisée à des fins statistiques"
+        used_for_invoicing: "Cette donnée sera utilisée à des fins de facturation"
+        used_for_reservation: "Cette donnée sera utilisée en cas de changement sur une de vos réservations"
+        used_for_profile: "Cette donnée sera seulement affichée sur votre profil"
+        public_profile: "Vous aurez un profil public et les autres utilisateurs pourront vous associer à leurs projets"
 
         # fenêtre de changement de mot de passe
         change_your_password: "Modifier votre mot de passe"
diff --git a/config/locales/app.public.pt.yml b/config/locales/app.public.pt.yml
index 9550020ba..1bd82bf50 100755
--- a/config/locales/app.public.pt.yml
+++ b/config/locales/app.public.pt.yml
@@ -85,8 +85,13 @@ pt:
           i_accept_to_receive_information_from_the_fablab: "Eu aceito receber informações do FabLab"
           i_ve_read_and_i_accept_: "Eu li e aceito"
           _the_fablab_policy: "a política do FabLab"
-          field_required: "Field required"                                                   # translation missing
-          unexpected_error_occurred: "An unexpected error occurred. Please try again later." # translation missing
+          field_required: "Field required"                                                         # translation missing
+          unexpected_error_occurred: "An unexpected error occurred. Please try again later."       # translation missing
+          used_for_statistics: "This data will be used for statistical purposes"                   # translation missing
+          used_for_invoicing: "This data will be used for billing purposes"                        # translation missing
+          used_for_reservation: "This data will be used in case of change on one of your bookings" # translation missing
+          used_for_profile: "This data will only be displayed on your profile"                     # translation missing
+          public_profile: "You will have a public profile and other users will be able to associate you in their projects"  # translation missing
 
           # password modification modal
           change_your_password: "Mudar sua senha"