diff --git a/js/index.js b/js/index.js
index 9e25ccd..373da26 100644
--- a/js/index.js
+++ b/js/index.js
@@ -7,6 +7,13 @@ $(document).ready(function () {
 });
 
 function setEvents() {
+    const heartEl = document.querySelector('body > h1 > span');
+    heartEl.addEventListener('click', function() {
+        const key = prompt('Introduce la clave');
+        if (key === null) return 
+        localStorage.setItem('vnKey', key);
+    }); 
+
     $(".btnnum").on("click", function () {
         pin += parseInt($(this).children().html());
         $("#txtPin").text(pin);
diff --git a/js/main.js b/js/main.js
index d7273da..33d9a8f 100644
--- a/js/main.js
+++ b/js/main.js
@@ -19,6 +19,11 @@ function printError(msg){
 $.ajaxPrefilter(function(xhr) {
     var orgErrorHandler = xhr.error;
 
+    var key = localStorage.getItem('vnKey');
+    if (key) {
+        xhr.jsonData.push(key)
+    }
+
     Object.assign(xhr, {
         url: `${urlBase}/workerTimeControl/${xhr.urlPath}`,
         headers: {
diff --git a/package-lock.json b/package-lock.json
index 6465606..8e14c92 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "es.verdnatura.worker-time-control",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {