I need a belt-mounted device with about 5 buttons which can communicate wirelessly with a computer. Specifically, when the user presses a button I need to be able to detect it in my Unity application so I can trigger certain events.
The device will be used while the user is being tracked by a motion capture system (either a Kinect or a mocap suit), so ideally it would be easy to press buttons without the need to look down at it.
Something like a Wireless Numeric Keypad would be ideal on the software side as I'd be able to just treat it like a regular keyboard in Unity, but physically it's larger than I'd like and I don't need nearly that many buttons. It would also require a bit of work to mount on a belt (though that's not much of an issue).