diff --git a/lemonldap-ng-portal/site/coffee/registerbrowser.coffee b/lemonldap-ng-portal/site/coffee/registerbrowser.coffee
index ece1185c8..47a8f17f3 100644
--- a/lemonldap-ng-portal/site/coffee/registerbrowser.coffee
+++ b/lemonldap-ng-portal/site/coffee/registerbrowser.coffee
@@ -1,4 +1,14 @@
 $(document).ready ->
-	Fingerprint2().get (result, components) ->
+	if window.requestIdleCallback
+		requestIdleCallback () ->
+			go()
+	else
+		setTimeout go, 500
+
+go = () ->
+	Fingerprint2.get (components) ->
+		values = components.map (component) =>
+			component.value
+		result = Fingerprint2.x64hash128(values.join(''), 31)
 		$('#fg').attr "value", result
 		$('#form').submit()
diff --git a/lemonldap-ng-portal/site/htdocs/static/common/js/registerbrowser.js b/lemonldap-ng-portal/site/htdocs/static/common/js/registerbrowser.js
index bb63d9a88..300f1d77e 100644
--- a/lemonldap-ng-portal/site/htdocs/static/common/js/registerbrowser.js
+++ b/lemonldap-ng-portal/site/htdocs/static/common/js/registerbrowser.js
@@ -1,10 +1,30 @@
 // Generated by CoffeeScript 1.12.8
 (function() {
+  var go;
+
   $(document).ready(function() {
-    return Fingerprint2().get(function(result, components) {
+    if (window.requestIdleCallback) {
+      return requestIdleCallback(function() {
+        return go();
+      });
+    } else {
+      return setTimeout(go, 500);
+    }
+  });
+
+  go = function() {
+    return Fingerprint2.get(function(components) {
+      var result, values;
+      console.error(components);
+      values = components.map((function(_this) {
+        return function(component) {
+          return component.value;
+        };
+      })(this));
+      result = Fingerprint2.x64hash128(values.join(''), 31);
       $('#fg').attr("value", result);
       return $('#form').submit();
     });
-  });
+  };
 
 }).call(this);
diff --git a/lemonldap-ng-portal/site/htdocs/static/common/js/registerbrowser.min.js b/lemonldap-ng-portal/site/htdocs/static/common/js/registerbrowser.min.js
index 5d6a937eb..d2b008001 100644
--- a/lemonldap-ng-portal/site/htdocs/static/common/js/registerbrowser.min.js
+++ b/lemonldap-ng-portal/site/htdocs/static/common/js/registerbrowser.min.js
@@ -1 +1 @@
-(function(){$(document).ready(function(){return Fingerprint2().get(function(t,n){return $("#fg").attr("value",t),$("#form").submit()})})}).call(this);
\ No newline at end of file
+(function(){var n;$(document).ready(function(){return window.requestIdleCallback?requestIdleCallback(function(){return n()}):setTimeout(n,500)}),n=function(){return Fingerprint2.get(function(n){var r,t;return console.error(n),t=n.map(function(n){return n.value}),r=Fingerprint2.x64hash128(t.join(""),31),$("#fg").attr("value",r),$("#form").submit()})}}).call(this);
\ No newline at end of file
diff --git a/lemonldap-ng-portal/site/htdocs/static/common/js/registerbrowser.min.js.map b/lemonldap-ng-portal/site/htdocs/static/common/js/registerbrowser.min.js.map
index 6c98fcb52..92b44a523 100644
--- a/lemonldap-ng-portal/site/htdocs/static/common/js/registerbrowser.min.js.map
+++ b/lemonldap-ng-portal/site/htdocs/static/common/js/registerbrowser.min.js.map
@@ -1 +1 @@
-{"version":3,"sources":["registerbrowser.js"],"names":["$","document","ready","Fingerprint2","get","result","components","attr","submit","call","this"],"mappings":"CACA,WACEA,EAAEC,UAAUC,MAAM,WAChB,OAAOC,eAAeC,IAAI,SAASC,EAAQC,GAEzC,OADAN,EAAE,OAAOO,KAAK,QAASF,GAChBL,EAAE,SAASQ,eAIrBC,KAAKC"}
\ No newline at end of file
+{"version":3,"sources":["registerbrowser.js"],"names":["go","$","document","ready","window","requestIdleCallback","setTimeout","Fingerprint2","get","components","result","values","console","error","map","component","value","x64hash128","join","attr","submit","call","this"],"mappings":"CACA,WACE,IAAIA,EAEJC,EAAEC,UAAUC,MAAM,WAChB,OAAIC,OAAOC,oBACFA,oBAAoB,WACzB,OAAOL,MAGFM,WAAWN,EAAI,OAI1BA,EAAK,WACH,OAAOO,aAAaC,IAAI,SAASC,GAC/B,IAAIC,EAAQC,EASZ,OARAC,QAAQC,MAAMJ,GACdE,EAASF,EAAWK,IACX,SAASC,GACd,OAAOA,EAAUC,QAGrBN,EAASH,aAAaU,WAAWN,EAAOO,KAAK,IAAK,IAClDjB,EAAE,OAAOkB,KAAK,QAAST,GAChBT,EAAE,SAASmB,cAIrBC,KAAKC"}
\ No newline at end of file