Move over fingerprints, voice and iris scans! Researchers have developed a new Google Glass- based biometric system which uses the skull to provide access to devices. People protect laptops and smartphones by a password or a PIN. However, these are often not secure, because users do not choose or store them well. With so -called biometric identifiers such as fingerprints, voice or iris scans, users can be identified more easily and securely, researchers said. Now, scientists have introduced a new biometric identifier. Their system 'SkullConduct' uses the skull to provide a digital access code. In the future this new method could also secure smartphones, researchers said.