Maker Pro
Maker Pro

Simple microcontroller that sends signal via wifi when touched

I'm looking for a small and light micrcontroller that will send a signal via wifi (hopefully with some ID) once it's touched (can be when a circuit is closed and I'll take care of closing it when there's touch).
This seems like a very basic component but I can't seem to find one.
It's for a game I'm trying to build, I want the players to throw things at each other and to have each player wear these sensors in strategic places so when they get hit there a signal will be sent via wifi to a computer which will automatically calculate the score. The ID is needed so that each player and where he was hit can be identified.
Any ideas?
 
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