Researchers Demonstrate Remote Touchscreen Scanning via Electromagnetic Emissions

A recent paper describes a method to scan touchscreen inputs remotely. The approach relies on detecting electromagnetic emissions from the device. It can capture touch events without physical contact. The technique works on common capacitive touchscreens. Findings suggest potential vulnerabilities in current hardware designs. The research highlights a new class of side‑channel attacks. Security implications could affect smartphones and tablets. Further work is needed to develop countermeasures.