[lxe]

I don't think this is how it will work. Broadcasting won't immediately interrupt others' connections.

[rwem]

Guess I'll just stick with the air horn.

[gumby]

Spray can works better -- and as a bonus the person doesn't return to gazing at the screen.

[rasz]

Its bluetooth, there will be bugs and crappy implementations. https://en.wikipedia.org/wiki/Bluesnarfing https://en.wikipedia.org/wiki/Bluejacking