John Hopkins researchers have demonstrated that SpeedPass and Ti based RFID systems can be hacked. This was reported in the June issue of Consumer reports with details found at http://www.rfidanalysis.org/. The Texas Instruments chip that is vulnerable to this kind of attack is used in most US keyless entry systems. Is this chip also used in the Prius System? If so, the smart folks at JH have provided instructions detailing just how YOUR prius might be stolen. Does anyone have information about the security of the Prius system?