What "tracking" or "GPU abuse" do you expect this API to bring to the browser, that isn't already enabled by existing APIs?
The sad part is it will be used for more focused targeting, rather than for benefit, we have people abusing Canvas and audio context.
I dont want companies to timestamp me by my face, to prove I like their content, or a dumb captcha API that decided im not a human because I'm darker. No please.
This API does not implicitly give access to the camera or photos. The things that you are concerned about are already possible by doing the NN part server-side, or less efficently in software. If anything, keeping the NN part on the client allows for more privacy, not less.
Not saying I agree or disagree with gp’s sentiment, but perhaps section 2.1.1
> The application is watching whether she is in front of her PC by using object detection
You can already do that with Javascript, it is just less efficient than using the hardware meant to accelerate NNs.