SWAT teams and rescue workers may soon take advantage of wireless networks to locate people moving around inside buildings.
We previously examined this nifty wireless concept that uses off-the-shelf technology to locate humans to within 3 feet on the other side of walls. Now the researchers have released a couple of awesome videos showing the person-tracking tech in action.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.