Side-channel trick: locating game players by listening to GPU coil whine

RexDouglass · x · 2026-09-18

vikhyatk shared a fun side-channel technique: capture GPU coil whine via a microphone and use its audio signature to infer player positions in a game.

A reply adds it's also handy for debugging — his noisy 2080s would reveal whether something was actually running as intended.

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