ZBar Node.js QR Code

qr.js

'use strict';
var exec = require('child_process').exec;

module.exports = function(callback) {
  exec('"C:\\Program Files (x86)\\ZBar\\bin\\zbarimg.exe" --raw --quiet capture.png', function(err, stdout, stderr){
    if(err) { return callback(err); }
    return callback(null, stdout.substring(0,stdout.length-1));
  });
}