Carjackers swipe biometric Merc, plus owner's finger

Just as the world and it's mother decides that biometrics are the be all and end all of security something like this happens where Carjackers swipe biometric Merc, plus owner's finger a very simple and strait forward way of defeating the system, that also brings a new meaning to the concept of an 'cryptanalytic attack'. Had they only known that with only a tenners worth of goods from the local cooking store you can beat 90% of all fingerprint readers.