A team of computer scientists at Hong Kong Baptist University have put a new spin on common speech-based biometric authentication methods by developing technologies that can identify individuals through their lip movements.

The effort, led by Prof. Cheun Yiu-ming, involves matching the lip movements associated with saying specific passwords to other visual lip characteristics, including shape and texture. It is, appropriately, called the lip motion password.

The researchers claim that lip movements are unique to each individual and cannot be duplicated. The system they are developing can pick up those subtle differences and deny or grant access to systems or information based on them. “The same password spoken by two persons is different, and a learning system can distinguish them,” Cheung said in a statement. Read more>