If anyone is looking for a business idea, if you could hack these things to be a remote control so that dance teachers can use it to pause/play and skip-to-next on the cheap and without having to run to their phone, that would sell like hotcakes. Typical scenario now is: teacher plugs phone into amp, then needs to run up and down to phone every 5 minutes. Having a bluetooth connection so that the bracelet can work as a play/skip remote for the phone would be enough. Range might be an issue, needs to be 30 meters (reliably) or so.