- #HOW TO MAKE A XPANEL FROM A TOUCHSCREEN ANDROID#
- #HOW TO MAKE A XPANEL FROM A TOUCHSCREEN SOFTWARE#
Still, Gupta can imagine it being used to do things like make large screens at museums interactive. The gestures are much simpler than the complex swipes and pinches you can make on those gadgets.
#HOW TO MAKE A XPANEL FROM A TOUCHSCREEN ANDROID#
The technology won’t make a noninteractive display as touch-sensitive as an iPhone or Android smartphone. Once the touch or gesture was determined, it would elicit an appropriate on-screen response-like pausing or resizing a video.
#HOW TO MAKE A XPANEL FROM A TOUCHSCREEN SOFTWARE#
The software used machine learning to predict if changes were simply “noise” or one of five gestures and touches that it had been set to respond to. Information about how the user’s actions changed the LCD’s electromagnetic interference was gathered by the sensor, and then sent to a connected PC, where software isolated the display’s signal and tracked how it changed over time. In the study, users’ gestures and touches controlled an on-screen video player. These signals show up as electromagnetic interference, and can be measured with a $5 sensor that plugs into a wall outlet. Gupta says his group’s method works by measuring signals that are normally given off by an LCD display and how they change when a user brings a hand near the screen. The group’s findings, explained in a paper that will be presented in May at the Computer Human Interaction conference in Paris, could eventually be used to cheaply add touch and gesture interactions to TVs, computers, and much larger displays, too. Existing methods that turn passive LCDs into touch screens typically use cameras or other sensors, but they’re not always practical.
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While touch screens are the norm on smartphones and tablets, they’re still not common on TVs, computer monitors, and other big displays. “All these devices around you have all these signals coming out of them, and we ignore them because we think they’re noise,” says Sidhant Gupta, a PhD candidate at the University of Washington’s Ubiquitous Computing Lab and one of the co-authors of the paper. The system takes advantage of the low levels of electromagnetic interference produced by many consumer electronics, harnessing it to do things like control video playback with pokes and motions on an otherwise noninteractive screen. But it may also be the key to cheaply transforming regular LCD screens into touch- and gesture-sensing displays, according to recent research.Ī group of researchers from the University of Washington’s Ubiquitous Computing Lab developed a method called uTouch that uses a simple sensor and software to turn an ordinary LCD into a touch screen display. Electromagnetic interference can screw up cell phone and radio reception.