A new study has found that every person moves their lips a little differently when they speak and this could be used as a "visual password" for biometric security. Ahmad Hassanat at the University of Mu'tah in Jordan has developed a new software that look for patterns of lip and mouth movements associated with different words as people spoke to a camera.

The software requests the user to utter a selected password and the users face is recorded in a video and the software then extracts a sequence of feature vectors. The features are then compared with the stored visual password, at the verification stage. The system could correctly identify the words being said nearly 80 per cent of the time.

This method doesn't require an additional software as most of the devices come with cameras these days and it might be the most secured biometric measure, if at all launched full-fledgely.

(AW: Vamshi)