OK, technically they're terahertz band phones
(NEWSER) - Soon, your phone could let you see through walls, superhero-style. Researchers at the University of Texas at Dallas have devised a way of harnessing the terahertz band of the electromagnetic spectrum with inexpensive microchips much like those already found in most consumer electronics, and a way of creating images from that data. The result? "You could put this chip and receiver on the back of a cellphone, turning it into a device carried in your pocket that can see through objects," Dr. Kenneth O says. More»