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Spying on Security Cameras Through Walls

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Someone tampering with a home security camera.

The EM Eye technique works on a variety of camera types, from home security cameras and dash cams to smartphone cameras.

Credit: iStock

Northeastern University researchers have developed a way to access video feeds from home security, dashboard, and smartphone cameras through walls.

The EM Eye technique detects electromagnetic radiation emitted by the cameras' wires using a radio antenna, decodes the signal, and uses machine learning to reproduce real-time video without sound at a similar quality as the original.

A test on 12 different types of cameras revealed that, depending on the model, EM Eye could successfully eavesdrop within a range of up to 16 feet.

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