diff --git a/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/AuthFacebook.pm b/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/AuthFacebook.pm
index 39c974a8b..cf00816ed 100644
--- a/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/AuthFacebook.pm
+++ b/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/AuthFacebook.pm
@@ -69,6 +69,7 @@ sub authInit {
         foreach my $arg (qw(facebookAppId facebookAppSecret)) {
             $self->abort("Parameter $arg is required") unless ( $self->{$arg} );
         }
+        $initDone++;
     }
     PE_OK;
 }
diff --git a/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/AuthWebID.pm b/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/AuthWebID.pm
new file mode 100644
index 000000000..2776c8de6
--- /dev/null
+++ b/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/AuthWebID.pm
@@ -0,0 +1,52 @@
+##@file
+# WebID authentication backend file
+
+#############################
+### EXPERIMENTAL MODULE ! ###
+#############################
+
+##@class
+# WebID authentication backend class
+package Lemonldap::NG::Portal::AuthWebID;
+
+use strict;
+use Lemonldap::NG::Portal::Simple;
+use Lemonldap::NG::Portal::AuthSSL;
+
+our $VERSION = '1.3.0';
+our @ISA     = qw(Lemonldap::NG::Portal::AuthSSL);
+our $initDone;
+
+BEGIN {
+    eval {
+        require threads::shared;
+        threads::shared::share($initDone);
+    };
+}
+
+## @apmethod int authInit()
+# @return Lemonldap::NG::Portal constant
+sub authInit {
+    my $self = shift;
+    my $tmp  = $self->SUPER::authInit(@_);
+    return $tmp unless ( $tmp eq PE_OK );
+    unless ($initDone) {
+        eval "use Web::ID";
+        $self->abort( 'Unable to load Web::ID', $@ ) if ($@);
+        $initDone++;
+    }
+    PE_OK;
+}
+
+sub extractFormInfo {
+    my $self = shift;
+    my $tmp  = $self->SUPER::extractFormInfo(@_);
+    return $tmp unless ( $tmp eq PE_OK );
+    return PE_CERTIFICATEREQUIRED
+      unless ( $ENV{SSL_CLIENT_CERT}
+        and $self->{webid} =
+        Web::ID->new( certificate => $ENV{SSL_CLIENT_CERT} ) );
+    return ( $self->{webid}->valid() ? PE_OK : PE_BADCREDENTIALS );
+}
+1;
+__END__