Researchers at Carnegie-Mellon University (CMU) are working with a Canadian startup called Autonomous ID to develop biometric shoes that can identify who you are by the way you walk.

The BioSoles can record the pressure points of someone’s feet, track their gait and use a microcomputer to compare that to a master file already made for that person. If the patterns match, the BioSoles stay silent. If they don’t, they transmit a wireless alarm message.

Since the devices are designed to detect changes in gait, some think they could end up being used to help spot early signs of Alzheimer’s disease.