Researchers working on understanding the system were able to break the 96-bit cryptographic system, by recording two conversations between the transponder and the key. The system tried a total of 196,607 options of secret keys before hitting the jackpot. Granted it took them inwards of half an hour, but if the researchers could break the system with just 2 recorded conversations, one wonders what Randall Raines (Nicolas Cage in Gone in 60 seconds) would do to your vehicle.