Locked-on proximity shirt: http://craziestgadgets.com/wp-content/uploads/2010/02/proximity-sensing-shirt.gif
Zelda hearts proximity shirt: http://www.thegreenhead.com/imgs/proximity-based-dynamic-life-shirt-3.jpg
I am not trying to make my own shirts but I am interested in the tech that makes those two shirts work. If the same results can be duplicated with an ardurino and/or xbee, then that would be great!! Please let me know if that can be done and if yes, could you point me in the right direction. Thanks!