Biometric security is often focused on the more boring anatomical parts, like the pads of the fingers (ehhh) or the eyes (who cares). So little attention has been paid to the security possibilities of the butt. Well, not anymore: researchers at the Advanced Institute of Industrial Technology in Tokyo have come up with a car seat that measures the precise contours and pressures left by your posterior.
At 18 months old, babies have begun to make conscious delineations between sentient beings and inanimate objects. But as robots get more and more advanced, those decisions may become harder to make. What causes a baby to decide a robot is more than bits of metal? As it turns out, it takes more than humanoid looks--babies rely on social interaction to make that call.
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.