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Attackers Can Use Electromagnetic Signals to Control Touchscreens Remotely

touchscreen-laptopmag-com-2022-truth

uses electromagnetic interference (EMI) to inject fake touch points into a touchscreen without the need to physically touch it

Attackers Can Use Electromagnetic Signals to Control Touchscreens Remotely

Ravie Lakshmanan with The Hacker News reports:

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IMAGE VIA laptopmag.com

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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.



Read More at The Hacker News!




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