Just as kids wrote on each other's backs and tried to guess what the letter or word was—something we loved—these tactile vests transmits signals to the wearer tactically. Each vest has 16 vibrating motors that can create 15 patterns with a "very high recognition" rate. In fact, when five volunteers were tested with these signals, only one of them made a single mistake.
These vests can be adapted to be used on the battlefield, yes, but we'd like to see them make a version for the Xbox 360. Did I feel a left arrow on my back? That means I need to flank left. Down? Duck. All of them go off at once? Oh, right, I'm being chainsawed.