but if you can't trust the government, the friction is necessary.
> unable to tie together everything about you just because there's no national ID.
SSN anyone?
If I were a hypothetical evil US government and there wasn't an SSN, I'd just create a database with an INTEGER PRIMARY KEY, compel Visa, MasterCard and American Express to send me 6 months of transaction history under a national security letter, correlate and quantize them all and presto, a few hours later, indexing complete.
It doesn't even have to be 95% accurate, although with some otherwise-anonymous looking demographics data you can get several nines of uniqueness. [1]
[1] https://dataprivacylab.org/projects/identifiability/paper1.p...
If you think it's a `Float in range [0..100]` it makes a lot less sense.