The Walabot 3D imaging sensor device magnetically connects at the back of your phone and lets you see through the solid objects around you.
The New Frontier for 3D Imaging. When I think of x-ray vision…, by Amy Tse, Intelligent Cities
Review: Walabot DIY 2, The Smart Visual Stud Finder - Gearbrain
3D X-ray vision vs 2D Terahertz imaging technology
VIDEO: Walabot DIY lets you see through walls
Walabot Developer (US) : Programmable 3D Imaging Sensor, for Makers, Developers, Engineers and Universities: : Industrial & Scientific
VIDEO: Walabot DIY lets you see through walls
The phone with 'X-RAY VISION
Walabot 3D-Imaging Scanner Gives You X-Ray Vision
Wacky gifts for the tech-savvy person who has everything
Walabot DIY Plus brings better X-ray vision to your walls - Gearbrain