Another goody from Wired's Danger Room (previous post, the oh so very cute Koosh Bullet). This time the weapon on display is the amazingly "smart" handgun: a gun that won't shoot unless you're wearing the right watch.
"German firm Armatix has an electronic safety that automatically disables the pistol when it's not within a few inches of a custom wristwatch. The watch sends a wireless arming signal to the gun. If the gun is picking up a signal from the watch, a green LED on the back lights up. Try squeezing the handle without wearing the watch, and you will see a red warning light.
Anyone can pick up a limited edition version of the pistol for about 7,000 euro, which is pretty steep for a .22cal plinker. They start shipping next month."