100 million VWs can be unlocked with a $40 cracker (and other cars aren't much better)

In Lock It and Still Lose It-On the (In)Securityof Automotive Remote Keyless Entry Systems, a paper given at the current Usenix Security conference in Austin, researchers with a proven track record of uncovering serious defects in automotive keyless entry and ignition systems revealed a technique for unlocking over 100,000 million Volkswagen cars, using $40 worth of hardware; they also revealed a technique for hijacking the locking systems of millions of other vehicles from other manufacturers. (more")