Topic: AudioContext Fingerprint

A wide-scale study of online trackers carried out by researchers at Princeton University has identified a new technique being used to try to strip web users of their privacy, as well as quantifying the ongoing usage of some better-known tracking techniques.

The new technique unearthed by the study is based on fingerprinting a machine’s audio stack via the AudioContext API. So it’s not collecting sound played or recorded on a machine but rather harvesting the audio signature of the individual machine and using that as an identifier to track a web user. … udy-finds/

AudioContext Fingerprint Test Page

Re: AudioContext Fingerprint

Super post!!  We've also been impressed by that study (there's a great page detailing the results on investigating online tracking at the researchers website) and following the AudioContext API usage.  It's getting a bit of usage but growing so Epic will soon block it :-).