AIRCODE: Hidden Screen-Camera Communication Hits 1Mbps Imperceptibly
deedydas · x · 2026-07-31
A fascinating USENIX paper named AIRCODE is shared, which establishes a hidden dual-channel communication system between screens and cameras. It uses imperceptible visual changes and inaudible audio signals to transfer data.
- Data Rate: Achieves a remarkably high rate of 1Mbps while ensuring unobtrusiveness, enabling the imperceptible transmission of texts and even videos.
- Key Contributions: Combines the complementary advantages of audio (reliable, low-rate) and visual (unreliable, high-rate) channels. It also incorporates visual odometry to accurately identify and track the captured screen amidst dynamic content and interference.
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