I just finished updating my list of firearms serial numbers, making several copies and depositing them in a variety of places (gunsafe, back of reloading manual, wallet). My game plan is to have the serial numbers, of any firearms that get stolen or lost, really
handy so when I call the local PD there'll be no time lost in reporting what happened and perhaps facilitating the recovery of the guns. Also, my insurance company will certainly want that information when I file a claim. This comes under "covering the basics" of firearms ownership.