Animated WiFi detector shirt keeps you single with signal
 

Life's great priorities -- human interaction and network access -- seem to exist in perpetual tension, but those of you who know exactly where you stand might want to check out this WiFi-detector shirt, which will simultaneously inform passerby that a WiFi network is nearby and that they probably don't need to speak to you. The detachable detector / display combo runs off three AAA batteries for "hours" -- just long enough for you to alienate the locals before heading back to your parents' basement. Scarily enough, it's already out of stock, but ThinkGeek should have more in a couple weeks for $30.

http://www.engadget.com/2007/10/06/a...e-with-signal/