diff --git a/passbook/core/forms/invitations.py b/passbook/core/forms/invitations.py
index 8111cef6e..b6f990830 100644
--- a/passbook/core/forms/invitations.py
+++ b/passbook/core/forms/invitations.py
@@ -27,7 +27,7 @@ class InvitationForm(forms.ModelForm):
     class Meta:
 
         model = Invitation
-        fields = ['expires', 'fixed_username', 'fixed_email']
+        fields = ['expires', 'fixed_username', 'fixed_email', 'needs_confirmation']
         labels = {
             'fixed_username': "Force user's username (optional)",
             'fixed_email': "Force user's email (optional)",
diff --git a/passbook/core/migrations/0013_invitation_needs_confirmation.py b/passbook/core/migrations/0013_invitation_needs_confirmation.py
new file mode 100644
index 000000000..4b09597e1
--- /dev/null
+++ b/passbook/core/migrations/0013_invitation_needs_confirmation.py
@@ -0,0 +1,18 @@
+# Generated by Django 2.1.7 on 2019-02-25 19:57
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('passbook_core', '0012_nonce'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='invitation',
+            name='needs_confirmation',
+            field=models.BooleanField(default=True),
+        ),
+    ]
diff --git a/passbook/core/models.py b/passbook/core/models.py
index e5fc6a6d9..31b0b6874 100644
--- a/passbook/core/models.py
+++ b/passbook/core/models.py
@@ -392,6 +392,7 @@ class Invitation(UUIDModel):
     expires = models.DateTimeField(default=None, blank=True, null=True)
     fixed_username = models.TextField(blank=True, default=None)
     fixed_email = models.TextField(blank=True, default=None)
+    needs_confirmation = models.BooleanField(default=True)
 
     @property
     def link(self):
diff --git a/passbook/core/urls.py b/passbook/core/urls.py
index a6a26b557..b08bb22b9 100644
--- a/passbook/core/urls.py
+++ b/passbook/core/urls.py
@@ -19,7 +19,8 @@ core_urls = [
     path('auth/login/', authentication.LoginView.as_view(), name='auth-login'),
     path('auth/logout/', authentication.LogoutView.as_view(), name='auth-logout'),
     path('auth/sign_up/', authentication.SignUpView.as_view(), name='auth-sign-up'),
-    # path('auth/sign_up/<uuid:nonce>/confirm/', , name='auth-sign-up-confirm'),
+    path('auth/sign_up/<uuid:nonce>/confirm/', authentication.SignUpConfirmView.as_view(),
+         name='auth-sign-up-confirm'),
     path('auth/process/denied/', view.FactorPermissionDeniedView.as_view(), name='auth-denied'),
     path('auth/password/reset/<uuid:nonce>/', authentication.PasswordResetView.as_view(),
          name='auth-password-reset'),
diff --git a/passbook/core/views/authentication.py b/passbook/core/views/authentication.py
index ab5c653e0..2a463dd6f 100644
--- a/passbook/core/views/authentication.py
+++ b/passbook/core/views/authentication.py
@@ -139,6 +139,15 @@ class SignUpView(UserPassesTestMixin, FormView):
     def form_valid(self, form: SignUpForm) -> HttpResponse:
         """Create user"""
         self._user = SignUpView.create_user(form.cleaned_data, self.request)
+        needs_confirmation = True
+        if self._invitation and not self._invitation.needs_confirmation:
+            needs_confirmation = False
+        if needs_confirmation:
+            nonce = Nonce.objects.create(user=self._user)
+            LOGGER.debug(str(nonce.uuid))
+            # TODO: Send E-Mail to user
+            self._user.is_active = False
+            self._user.save()
         self.consume_invitation()
         messages.success(self.request, _("Successfully signed up!"))
         LOGGER.debug("Successfully signed up %s",
@@ -185,12 +194,24 @@ class SignUpView(UserPassesTestMixin, FormView):
             sender=SignUpView,
             user=new_user,
             request=request)
-        # TODO: Implement Verification, via email or others
-        # if needs_confirmation:
-        #     Create Account Confirmation UUID
-        #     AccountConfirmation.objects.create(user=new_user)
         return new_user
 
+class SignUpConfirmView(View):
+    """Confirm registration from Nonce"""
+
+    def get(self, request, nonce):
+        """Verify UUID and activate user"""
+        nonce = get_object_or_404(Nonce, uuid=nonce)
+        nonce.user.is_active = True
+        nonce.user.save()
+        # Workaround: hardcoded reference to ModelBackend, needs testing
+        nonce.user.backend = 'django.contrib.auth.backends.ModelBackend'
+        login(request, nonce.user)
+        nonce.delete()
+        messages.success(request, _('Successfully confirmed registration.'))
+        return redirect('passbook_core:overview')
+
+
 class PasswordResetView(View):
     """Temporarily authenticate User and allow them to reset their password"""