Simulate Magnetic Credit Card Swipe (only works in Firefox)

gistfile1.js

"%B4000000000000002^CardUser/John^030510100000019301000000877000000?;4000000000000002=0305101193010877?".split('').forEach(function(k){
  var e = new KeyboardEvent("keydown", {key: k, char: k, charCode: k.charCodeAt(0), keyCode: k.charCodeAt(0), which: k.charCodeAt(0)});
  window.dispatchEvent(e);
});
var ev = document.createEvent('KeyboardEvent');; ev.initKeyEvent(
    'keydown', true, true, window, false, false, false, false, 13, 0);
document.body.dispatchEvent(ev);