From our voice to our faces to more unorthodox methods like our "heartprint," there are a growing number of ways for computers to recognize their users. We have yet to come across one based on our footsteps, however. Researchers from the U.K.'s University of Manchester and Spain's Universidad Autonoma de Madrid are working to change that. A new A.I. biometric verification method can successfully identify individuals by the way they walk across a pressure pad on the floor. The technology could one day be used as an alternative, or augmentation, to existing biometric identification system in places like airports. "We have realized that sensing human gait has biometric potential from the early days when we demonstrated the Manchester'Magic Carpet' to user groups back in 2010," Krikor Ozanyan, Professor of Photonic Sensors & Systems at Manchester, told Digital Trends.