I recall reading about a scheme that puts a different 1x1 tracking pixel for every CSS pixel breakpoint, and then uses that as a piece of info in the fingerprin

I recall reading about a scheme that puts a different 1x1 tracking pixel for every CSS pixel breakpoint, and then uses that as a piece of info in the fingerprint. I don't remember the details, I can't find it, and the tracker would still have to join on something (probably IP, which wouldn't work very well.)