I saw the same show, and saw the same thing. Glock probalby doesn't care much about it, since it doesn't work anyway. Fingerprints don't change, ever. On guns, use and wear can cause things to change, replacing componets changes things, and anyone can take a file to manipulate the 'fingerprint'. I guess they just go ahead, put the fired test bullet in the packaging, and let Maryland, and any other state that wants to waste money cataloging a brass cartridge do it. The same story reported that the 'fingerprinting' process had resulted in the capture of NO criminals. All it does is help trace the gun back to the original purchaser, and the paperwork already does that.
Just my thoughts....