In other words, the new technique is based on fingerprinting a machines audio stack via the AudioContext API.
More sophisticated scripts process an audio signal generated with an OscillatorNode to fingerprint the gadget.
This technique appears conceptually similar to that of canvas fingerprinting.
Using the AudioContext API to fingerprint does not collect sound played or recorded by your machine.
An AudioContext fingerprint is a property of your machines audio stack itself, they note on the test page.
Further, the researchers ensure to highlight that this is not a widespread tracking tactic.
For the detailed study, it’s possible for you to read this fullPDFfull here.
source: www.techworm.net