McAfee's Everykey Can Unlock Your Phone, Accounts, Doors, And More
 

Is having a master key an awful idea, or do you think we're headed toward this kind of thing in the future? When Everykey - which supports Windows, OS X, Linux, Android, and iOS (requires jailbreaking) - comes under the specified proximity of a device - up to 3 metres - it unlocks the device - be it your phone, your account, your computer. What's more, when you walk away from your device, it automatically unlocks them too.

http://www.hardocp.com/news/2016/01/..._d oors_more/