One of my fears about the NFA system is that we're all beta-testing a future registration scheme for guns in general. Well, if that's the case, we're proving such a scheme would never work. The Feds have issues with the few million NFA items out there, how would they handle a few hundred million?
But yeah, imagine this - your likeness is digitized, and companies can hook into it. Suddenly you're banned from IKEA because you may or may not have a gun on you, but IKEA has access to the Fed's facial database and when you entered, it ran a query and got a hit. No Klerjöppøer for you!
Haven't you noticed that when you swipe your credit card or debit card at the gas station the indicator light blinks on the type of fuel you usually buy..before you actually flipped the lever. System already knows from previous fill ups.