Dealer records and registration
Red's Trading Post blog has some thoughts.
So does Clayton Cramer. For background, FFLs primarily rely on paper records (which have high potential for error, as a serial no. and other data is transcribed by hand), one factor in this being that ATF only allows computerized records if it has approved the software, and very few such systems have been approved. As Red's points out, the approved systems are by no means cheap. The reason for approval is, I assume to make sure that it's hard to go back and alter entries. I suspect the standard used is something close to "impossible to alter entries," which may be overly strict (you could alter hard copy at the cost of maybe an hour's work, remove the spiral binder, do a new handwritten page, substitute, restore binder, substitute new 4473, etc.).