This presentation is about challenging many of the popular preconceptions about RFID technology. "Short-range" will be shot down first (I'm aiming to set a half-mile world record in the Nevada desert just before Defcon), "secure" will be busted second (don't bring any RFID tags unless you want them cloned), "immune to electromagnetic pulse weaponry" will fall last (and hopefully most spectacularly). I'll be covering a wide range of different RFID technologies from 125KHz to 900MHz, and releasing a whole pile of source code, schematics, and (with luck) a little magic smoke.