diff --git a/addons/point_of_sale/point_of_sale_demo.xml b/addons/point_of_sale/point_of_sale_demo.xml
index 3638b0faa72..95c0192f6c7 100644
--- a/addons/point_of_sale/point_of_sale_demo.xml
+++ b/addons/point_of_sale/point_of_sale_demo.xml
@@ -687,6 +687,7 @@
         <record id="leffe_blonde_33cl" model="product.product">
           <field name="list_price">1.00</field>
           <field name="name">Leffe Blonde 33cl</field>
+          <field name='ean13'>5410228142218</field>
           <field name="pos_categ_id" ref="special_beers"/>
           <field name="product_image">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</field>
         </record>
diff --git a/addons/point_of_sale/static/src/js/pos.js b/addons/point_of_sale/static/src/js/pos.js
index 77b38d9b872..238366163d9 100644
--- a/addons/point_of_sale/static/src/js/pos.js
+++ b/addons/point_of_sale/static/src/js/pos.js
@@ -1266,31 +1266,46 @@ openerp.point_of_sale = function(db) {
                 if (!isNaN(Number(String.fromCharCode(e.keyCode)))) {
                     // a number
                     if (codeNumbers.length==0) {
-                        codeNumbers.timeStamp = new Date().getTime();
+                        timeStamp = new Date().getTime();
                     } else {
-                        if (codeNumbers.lastTimeStamp + 30 < new Date().getTime()) {
+                        if (lastTimeStamp + 30 < new Date().getTime()) {
                             // not a barcode reader
                             codeNumbers = [];
-                            codeNumbers.timeStamp = new Date().getTime();
+                            timeStamp = new Date().getTime();
                         }
                     }
                     codeNumbers.push(e.keyCode - 48);
-                    codeNumbers.lastTimeStamp = new Date().getTime();
+                    lastTimeStamp = new Date().getTime();
                     if (codeNumbers.length == 13) {
                         // a barcode reader
                         var barcode = codeNumbers.join('');
                         console.log('barcode: ' + barcode);
                         var selectedOrder = self.shop.get('selectedOrder');
                         var productsCollection = self.shop.get('products');
-                        // EAN digit control calculation, based on http://es.wikipedia.org/wiki/EAN#Javascript , licensed under Creative Commons Attribution-Share-Alike License 3.0
-                        var checksum = 0;
-                        ean13Reversed = codeNumbers.reverse();
-                        for (var pos in ean13Reversed) {
-                            checksum += ean13Reversed[pos] * (3 - 2 * (pos % 2));
-                        }
-                        checksum = (10 - (checksum % 10)) % 10;
+                        // EAN digit control calculation
+                        var st1 = codeNumbers;
+                        var st2 = st1.slice(0,12).reverse();
+                        var countSt3 = 1;
+                        var st3 = 0;
+                        $.each(st2, function() {
+                            if (countSt3%2 === 1) {
+                                st3 +=  this;
+                            }
+                            countSt3 ++;
+                        });
+                        st3 *= 3;
+                        var st4 = 0;
+                        var countSt4 = 1;
+                        $.each(st2, function() {
+                            if (countSt4%2 === 0) {
+                                st4 += this;
+                            }
+                            countSt4 ++;
+                        });
+                        var st5 = st3 + st4;
+                        var dc = (10 - (st5%10)) % 10;
                         // End of EAN digit control calculation
-                        if (Number(barcode.charAt(12)) !== checksum) {
+                        if (Number(barcode.charAt(12)) !== dc) {
                             // barcode read error, raise warning
                             $(QWeb.render('pos-scan-warning')).dialog({
                                 resizable: false,
@@ -1332,6 +1347,7 @@ openerp.point_of_sale = function(db) {
                                 buttons: {
                                     "OK": function() {
                                         $( this ).dialog( "close" );
+                                        return;
                                     },
                                 }
                             });