This also exists: https://abrahamjuliot.github.io/creepjs/

TBH, its never anything super exotic (though it helps) but simple stupid basic things like cookies that does 70% of the work here. Also, your IP address at home is _really_stable_.

If I can give you a sticky cookie (cookies, indexdb, localstorage), a half-assed fingerprint, and tie it to your IP-address, and know you're not on a cell-tower; this is probably good enough for most purposes.

Use safari on private relay in private mode.