$5 Sensor Turns LCD Monitors Into Touchscreens 98
An anonymous reader writes with this snippet from ExtremeTech: "Researchers at the University of Washington's aptly named Ubiquitous Computing Lab can turn any LCD monitor in your house into a touchscreen, with nothing more than a $5 sensor that plugs into the wall and some clever software." The system works by measuring changes that your hand creates in the electromagnetic signature of the monitor. Surprisingly, it offers some pretty fine-grained detection, too: "full-hand touch, five-finger touch, hovering above the screen, pushing, and pulling." The "$5 sensor" part is mostly theoretical for now to those of us who don't live in a lab, though; on the other hand, "co-author Sidhant Gupta tells Technology Review that the $5 sensor uses off-the-shelf parts, and the algorithms are included in the paper, so it would be fairly easy for you — or a commercial entity — to recreate the uTouch system."
Cost (Score:4, Informative)
Re:Touch screen or big button? (Score:4, Informative)
Fun fact though, they've used the same technology to monitor the fields generated by the lights in a room, so you can actually gain a picture of movement in the room based off of only the flux in the lights' power draws. Again, this is very low resolution, but you don't always need every system to be high res.