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Complexity · 4071 days ago · link · · parent · post: Meet “badBIOS,” the mysterious Mac and PC malware that jumps airgaps
Here's a Javascript library that provides ultrasonic audio networking in the browser. It's more hobbyist or proof of concept at the moment. Ultrasonic communications has already made its way into kids' toys ( Furby for example ) Those two are unidirectional but show it's possible. It is a leap from the possibility to using it as a command and control system, but not much of a leap.