Passwords are fine, but they are usually short, easy to remember, and relatively easy for others to find out. Fingers, on the other hand, are attached to your body, and notoriously difficult to hack off without the owner noticing.
Fingerprint recognition technology is one of those areas which is completing the transition from sci-fi to commercial availability, and Kerrytech’s U.are.U system illustrates perfectly just how available this technology is becoming. The device – think of it as a mouse for the security conscious – scans the user’s fingerprint and generates a unique 128-bit cryptographic password.
Crucially, your fingerprint cannot be cloned, because its image is never stored on the computer. The 128 bit password is totally encrypted and at no point is information within the system un-encrypted, therefore making it practically impossible to breach the information.