AliExpress accused of fingerprinting shoppers with silent audio trick that also muted a dev's headphones

Developer Matt Callaghan discovered AliExpress pages running highly obfuscated WebAudio scripts that generate inaudible sounds and analyze the browser's audio processing to build a comprehensive device/browser fingerprint; this behavior also prevented his Bluetooth headphones from switching devices. Browser vendors (Firefox, Brave, Safari) say they have mitigations that largely neutralize WebAudio fingerprinting for most users, while Chrome is reported to offer weaker protections.