Web Audio Fingerprinting on E-Commerce Sites Discovered Disrupting Bluetooth Audio

A technical investigation published by web privacy researchers has identified an unintended side-effect of aggressive browser fingerprinting scripts deployed across major retail websites like AliExpress. The anti-fraud scripts utilize the HTML5 WebAudio API to synthesize silent audio signals for hardware identification.

When these scripts run in background tabs, they open active audio streams that keep system audio sub-systems awake, preventing Bluetooth multipoint headphones from switching seamlessly between connected devices or causing frequent audio driver drops.

Web standards groups are proposing browser permissions limits on background WebAudio context initialization to curb intrusive tracking techniques.