The next frontier of "#fingerprinting" is #biometrics, and the pretexts to establish it are "secure authentication", convenience, and "fighting bots".
Biometrics come in handy when interested parties feel annoyed by people striving to use, e.g., more #privacy preserving hardware and software: why not directly "fingerprint" users, the real people? You can switch to a different browser, but not so much to a different body.
It's not just about established technologies like literal fingerprint readers; #face recognition; #iris recognition; or measuring the timing of keystrokes, mouse movements, or touchpad swipes.
Seven years ago, there was already a paper on using an Electroencephalogram (EEG) to measure your reaction to (un)familiar visual stimuli, for "authentication" purposes.
Following up on such ideas, there are now #EU #tenders for exploring "#stimulus-induced biometrics", that is, measuring your body's reactions to specific stimuli, with the goal of identifying you. Because you just can't stop your reactions.
As always, "fingerprinting" you will be sold to you as a "convenience" (control your computer only with your mind!) and "security enhancement".
BTW, if you already own smart vacuuming robots, indoor cameras and Alexa that have charted your home and habits: have you ever wondered why some "entrepreneurs" are so excited about brain implants that will "enhance" everybody's "capabilities"…?
https://ted.europa.eu/en/notice/-/detail/417702-2024
https://dl.acm.org/doi/10.1109/SMC.2017.8123093