I've had my plates stolen before. If someone was tracking the criminal who stole my plates and thought they were tracking me, that would be bad for me.

There is a Constitutional right to privacy that extends beyond the 4th Amendment. If it covers having an abortion, wouldn't it cover something that is actually your right to privacy?

I will bet that the information in these database is used to obtain search warrants, and used in criminal prosecutions. And I will bet that the security measures on these insular, home grown database systems is woefully insufficient to ensure that it is real data, and not someone just editing the database to get a bogus warrant.