>turning it on, activating the wireless connection. Can be managed by bluetooth LE. > remembering to charge it every day People do it for their smartwatches.

>turning it on, activating the wireless connection. Can be managed by bluetooth LE. > remembering to charge it every day People do it for their smartwatches. Also, making it in a key fob format would lend itself naturally to some nice key holder accessory where you can charge it (wirelessly, even?) or it can have a spring-loaded usb port to charge in your car.