Five Tales of RFID Hacking

They can steal your smartcard, lift your passport, jack your car, even clone the chip in your arm. And you won't feel a thing ...

... The coil in Westhues' hand is the antenna for the wallet-sized device he calls a cloner, which is currently shoved up his sleeve. The cloner can elicit, record, and mimic signals from smartcard RFID chips. Westhues takes out the device and, using a USB cable, connects it to his laptop and downloads the data from Van Bokkelen's card for processing. Then, satisfied that he has retrieved the code, Westhues switches the cloner from Record mode to Emit. We head to the locked door.

"Want me to let you in?" Westhues asks. I nod.

He waves the cloner's antenna in front of a black box attached to the wall. The single red LED blinks green. The lock clicks. We walk in and find Van Bokkelen waiting.

"See? I just broke into your office!" Westhues says gleefully. "It's so simple." Van Bokkelen, who arranged the robbery "just to see how it works," stares at the antenna in Westhues' hand. He knows that Westhues could have performed his wireless pickpocket maneuver and then returned with the cloner after hours. Westhues could have walked off with tens of thousands of dollars' worth of computer equipment - and possibly source code worth even more. Van Bokkelen mutters, "I always thought this might be a lousy security system."

RFID chips are everywhere - companies and labs use them as access keys, Prius owners use them to start their cars, and retail giants like Wal-Mart have deployed them as inventory tracking devices. Drug manufacturers like Pfizer rely on chips to track pharmaceuticals. The tags are also about to get a lot more personal: Next-gen US passports and credit cards will contain RFIDs, and the medical industry is exploring the use of implantable chips to manage patients. According to the RFID market analysis firm IDTechEx, the push for digital inventory tracking and personal ID systems will expand the current annual market for RFIDs from $2.7 billion to as much as $26 billion by 2016....

...Grunwald cowrote a program called RFDump, which let him access and alter price chips using a PDA (with an RFID reader) and a PC card antenna. With the store's permission, he and his colleagues strolled the aisles, downloading information from hundreds of sensors. They then showed how easily they could upload one chip's data onto another. "I could download the price of a cheap wine into RFDump," Grunwald says, "then cut and paste it onto the tag of an expensive bottle." ... Aside from pranks, vandalism, and thievery, Grunwald has recently discovered another use for RFID chips: espionage. He programmed RFDump with the ability to place cookies on RFID tags the same way Web sites put cookies on browsers to track returning customers. With this, a stalker could, say, place a cookie on his target's E-ZPass, then return to it a few days later to see which toll plazas the car had crossed (and when). Private citizens and the government could likewise place cookies on library books to monitor who's checking them out.