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AliExpress silent WebAudio fingerprinting keeps Bluetooth audio path active, breaking multipoint switching even when tab is muted
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Illustration only Photo by Vista Wei on Unsplash
AliExpress's anti-abuse scripts create hidden WebAudio graphs connected to the audio destination with zero gain, which holds the system audio path open and prevents multipoint Bluetooth headphones from switching to other connected devices.
Browser fingerprinting techniques can break legitimate device functionality beyond privacy concerns, here, silent audio processing prevents Bluetooth multipoint switching and no standard mute control can stop it. The fingerprinting operates outside media element APIs, leaving users with no recourse short of closing the tab.
Written by elseif from the cluster below · every claim links back to a sourceThe three things worth knowing
AliExpress's collina.js and fireyejs.js scripts create hidden AudioContext objects that route a sawtooth oscillator through a zero-gain node to the audio destination for device fingerprinting.
The silent audio processing keeps the system audio path active, preventing multipoint Bluetooth headphones from switching to other connected devices.
Because the fingerprinting uses AudioContext directly rather than media elements, browser tab mute controls cannot stop it.
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