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The Hacker News - Cybersecurity News and Analysis: touch screen

Attackers Can Use Electromagnetic Signals to Control Touchscreens Remotely

Attackers Can Use Electromagnetic Signals to Control Touchscreens Remotely
May 27, 2022Ravie Lakshmanan
Researchers have demonstrated what they call the "first active contactless attack against capacitive touchscreens." GhostTouch , as it's called, "uses electromagnetic interference (EMI) to inject fake touch points into a touchscreen without the need to physically touch it," a group of academics from Zhejiang University and Technical University of Darmstadt  said  in a new research paper. The core idea is to take advantage of the electromagnetic signals to execute basic touch events such as taps and swipes into targeted locations of the touchscreen with the goal of taking over remote control and manipulating the underlying device. The attack, which works from a distance of up to 40mm, hinges on the fact that  capacitive touchscreens  are sensitive to EMI, leveraging it to inject electromagnetic signals into transparent electrodes that are built into the touchscreen so as to register them as touch events. The experimental setup involves an electrostatic gun

How to Turn Any Non-Touch Screen PC Into a Touch Screen

How to Turn Any Non-Touch Screen PC Into a Touch Screen
December 21, 2015Swati Khandelwal
Want to buy a touch-screen laptop but couldn't afford it? But what if I told you that you can turn your existing non-touch-screen laptop into a Touch Screen laptop? Yes, it's possible. You can now convert your laptop or PC into a touch screen with the help of a new device called AirBar . Touch screen has become a popular feature on laptops these days, and many laptops are moving toward having touch screens, but not every laptop or desktop model comes with the feature. Swedish company Neonode has brought to you a new device, AirBar, that would bring the touch technology to virtually any computer from your non-touch laptops to notebooks. What is AirBar and How does it Work? AirBar is a small plug-and-touch bar that attaches magnetically to the bottom of your machine's display. When connected to your laptop via an available USB port, AirBar starts emitting a beam of invisible light across your screen that is used to track touchscreen movements
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