"From the last paragraph I got you're OK with having an unregulated surveillance system in the US which records information about you and makes god-knows-what conclusions from your movements, behaviour etc."
And no evidence for this has been supplied.
For example, you're assuming the "central database" is one big one run by the government. The term would equally well apply to a computer in a university's security office, which receives feeds from all the university's security cameras, which it likely records digitally, because it's 2012 and that's how we do things now.
The location of that university security office is probably "undisclosed" because really who cares if you don't need to go there? It's "disclosed" to people for whom that information is relevant, like people who work there.
And no evidence for this has been supplied.
For example, you're assuming the "central database" is one big one run by the government. The term would equally well apply to a computer in a university's security office, which receives feeds from all the university's security cameras, which it likely records digitally, because it's 2012 and that's how we do things now.
The location of that university security office is probably "undisclosed" because really who cares if you don't need to go there? It's "disclosed" to people for whom that information is relevant, like people who work there.