Google Wallet announcement? Well tech tinkerer Joe Desbonnet has whipped up what he dubs "poor man's NFC" using an Arduino, some magnet wire, and any compass-equipped Android smartphone (which is almost all of them). By placing a coil of wire on the phone and connecting it to the DIYer's favorite microcontroller, Desbonnet was able to send data, albeit very slowly, to his HTC Desire running a special app to decode the signals. Granted, you're probably not going to see American Eagle mod their point of sale systems to talk to your phone's magnetometer, but it's still a neat trick. In fact, we'd break out our Arduino right now to give it a try, but our secret lair is strangely devoid of enameled copper wire. Check out the source link for instructions, and don't miss the video after the break.