A PulseWallet system is demonstrated during the Consumer Electronics Show (CES) in Las Vegas Jan 9, 2013. The device identifies registered users by unique finger vein patterns. The user's account is registered to a bank account or credit card to make purchases. The system is not currently in operation in stores. [Photo/Agencies]

The Lockitron by Apigy Inc. is displayed during the Consumer Electronics Show (CES) in Las Vegas Jan 9, 2013. The Lockitron retrofits over a deadbolt door lock and the door can be locked and unlocked with a smartphone. The $179.00 system will be shipping in March, said co-founder Cameron Robertson. [Photo/Agencies]