Are biometrics really the answer?

When it comes to online security, many seem to be touting biometrics -- fingerprints, retina scans, etc. -- as the holy grail. In theory, they cannot be faked or copied, don't require memorization and can't be lost. Perfect, right?

Well, tell that to Mr. Kumaran, an accountant in Malaysia whose car was protected by a fingerprint recognition system. A gang stole the car, and realizing that they could not use the car without the owner's finger, they cut if off with a machete.

Back to the drawing board.