The database means that soon everyone in meatspace (pun intended) not taking special steps will be possible to identify from a small sample. It is problematic a

The database means that soon everyone in meatspace (pun intended) not taking special steps will be possible to identify from a small sample. It is problematic and highly abusable. What they're not mentioning is key error rates... Combine that with electronic identification and advertisement kind of databases, suddenly few will be pseudonymous, not to mention anonymous.