Marine corporal Joshua Bleill lost both his legs above the knees when a bomb exploded under his Humvee while on patrol in Iraq in October 2006.  Now, he's starting to walk again with the help of prosthetic legs outfitted with Bluetooth technology, more commonly associated with hands-free cell phones.

Computer chips in each leg send signals to motors in the artificial joints so the knees and ankles move in a coordinated fashion. Bleill's set of prosthetics have Bluetooth receivers strapped to the ankle area. The Bluetooth device on each leg tells the other leg what it's doing, how it's moving, whether walking, standing or climbing steps, mimicking each other, stride for stride.

Older models of computer-controlled legs have to be "programmed" via wire by laptop computers before the amputee can use them. Those legs required more movement from the amputee's remaining thigh muscle to generate motion in the prosthetic leg.  Because of built-in motors, the Bluetooth legs allow Bleill to walk longer before he tires.

This new generation of prosthetic technology has one other thing in common with a cell phone: they need to be charged overnight. Currently, there are no spare batteries available.

Story from CNN