"The combination of CMOS and terahertz means 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," O said in a statement. He and his team plan to limit its range to less than four inches, though, so your next Android device unfortunately won't be a Superman phone. Still, this development means handheld THz scanners may not be far off at all.