Note this requires device proximity
Hacking Device Can Secretly Swipe, Tap Smartphone Screen
New Scientist
Jeremy Hsu, August 31, 2022
Separate teams of researchers have developed devices for remotely hacking smartphone touchscreens. Both methods involve placing devices featuring an antenna for transmitting signals and a phone locator under a table. The locator deduces the position and orientation of a touchscreen device placed on the table, then the antenna sends electromagnetic signals imitating electric field disturbances caused by physical touch. The Invisible Finger method created by University of Florida researchers caused both iOS and Android devices to recognize the electromagnetic touches; the GhostTouch technique from scientists at China's Zhejiang University worked with multiple Android devices, but could not crack the iPhone 7 Plus or certain OPPO phone models. The hacks only work with the target device lying face down and positioned close to the antenna.
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