u use for private gun buys, cashing checks, getting utilities, place to stay, motel room, etc. The latter, you make yourself, on your PC. The former are very precious, ALL you do with them is show them to cops, if you are caught DRIVING. You dont do anything to put that precious, hard to get ID at risk. You dont use any ID that's "traciable" (ie, your PIC on file with DMV) to do anything that can lead to trouble. The ID you make yourself is used for that sort of stuff, and then cut up and burned.