Wearable passwords and keys are becoming more prevalent, and the Everykey is the latest device to enter the game with a “fashion meets security and convenience” proposition. The wristband uses Bluetooth technology to easily unlock smartphones, tablets or computers, not to mention doors, car doors and bike locks. It also acts as a password manager that automatically logs the wearer in to their various online accounts.
http://www.digitaltrends.com/cool-tech/wear-passwords-keys-wrist-everykey/