If you’ve ever watched a taxi drive off into the distance with your cellphone on the back seat, left your phone under a napkin at a restaurant or just found you’re halfway to work and your BlackBerry is still sat charging in the kitchen, then nio believe they have the solution. The UK firm are offering a Bluetooth keychain and some proprietary software that you install on your cellphone; that creates a roughly 25m link between the two, which if exceeded causes both keychain and phone to flash and sound an alarm.

Video overview after the cut













