So I've been trying to think of a way to make a multiplayer quiz game where a question is displayed and the first person to buzz in (just a button on the screen) is given the opportunity to answer the question. So with the possibility of two people buzzing in at almost the same time, what would be the best way to go about this to determine who the true first person to buzz in was? Sockets? A service like Pusher? Bluetooth? Scoreloop? Skiller? OpenFeint? Some other solution?
Thanks for any input/examples.
I decided to go with bluetooth