NFC

nfc.js

var nfc  = require('nfc').nfc;
var util = require('util');

var Badge = {
    logging: true,
    read: function(callback) {
        var Badge = this;
        var i = 0;

        Badge.logging && console.log('nfc.version(): ' + util.inspect(nfc.version(), { depth: null }));
        Badge.logging && console.log('nfc.scan(): ' + util.inspect(nfc.scan(), { depth: null }));

        var loop = function() {
            var device = new nfc.NFC();
            device.on('read', function(tag) {
                Badge.logging && console.log(++i, tag.uid);
                callback(tag);
            });

            device.on('stopped', function() {
                Badge.logging && console.log('rebooting');
                setTimeout(loop, 1000);
            });

            device.start();
        };

        loop();
    }
};

Badge.logging = false;
Badge.read(function(tag) {
    console.log('tag', tag.uid);
});