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Many autonomous cars use LIDAR — a kind of laser-based radar — to sense the world around them. But now a researcher has developed a simple system that can fool the devices into seeing objects where really none exist.

Spectrum reports that Jonathan Petit, from Security Innovation, has developed a system to send spurious signals toward the LIDAR sensors used in self-driving cars. Consisting of a low-power laser and a pulse generator, powered by a Raspberry Pi or Arduino, the kit can cost as little as $60 to make. The hardware can be used to capture the light reflections from an obstacle and then send them toward the sensors that sit on top of autonomous vehicles, as shown in the image above. He explains to Spectrum:



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