This could just as well be a cableless device that sticks into the keyboard USB port instead of this dangling thing that you've to be aware at all times. My 2 cents
EpicBlobUnfortunately nothing in electronic is "easy". But I've make it work with a really crappy keyboard I have laying around. The energy efficiency wasn't good but that's mainly because the board was badly designed and draw too much power (regardless of using battery or straight from the usb cable).