We want an inexpensive location based app that would allow large amounts of users to play an internet game of tip. In the game you have to physically get out and "tip" other players. The idea is to not be in (like the age-old game of tip, tag or it) If you are in, you have to pass on the "in" to another player by becoming within one meter of them and waving your iPhone at them. A big grid is drawn around the world, and about 2 (or more) players within each grid square will be randomly selected to be in or "it". The screen would show a map (like on the iPhone's inbuilt maps) with an arrow (you) either red or blue (red for in or blue for out) and other dots (other players) would appear red or blue (again red for in or blue for out). Notifications would alert players if a red player (in player) comes within ten meters, or if your a red player, if a blue player is near.