Shane Drew

A group of clever Japanese scientists have come up with a biometric scanner that can identify you by your backside.

The scanner measures 360 pressure points to build a 3D profile of how a person sits. It can apparently identify who is sitting in the seat with 98 per cent accuracy.

The discovery could do away with car keys and could even be used in offices instead of computer passwords.

The scientists, from Tokyo’s Advanced Institute of Industrial Technology, said it is a simple matter of fitting pressure sensors inside a normal car seat – and it could be in production cars as early as 2014.