What is audio fingerprinting?
A short sound is processed through the Web Audio API; hardware and drivers change the output slightly, producing another high-entropy signal.
Why it matters
Audio fingerprinting is less common than canvas or WebGL but still appears in commercial fingerprint libraries. Some privacy browsers disable OfflineAudioContext entirely.
If audio probes fail on our site, that often means protection is active rather than a broken test.
Anti-fingerprinting guide · Hub
Test audio fingerprinting
Test audio fingerprinting