Biometric identification is shaping up to be one of the majotr technologies of the next decade. Its ubiquity will only be advanced by the announcement of Seiko Epson’s new 0.2mm thick fingerprint sensor, which reads electrical signals from the skin of a digit being touched to it. The tiny size of the device ensures it will be possible to incorporate it almost anywhere – so at least we’ll never have to worry about losing our keys again.