I've got a lazy jackass brother-in-law who's not disabled but hangs a tag on his mirror wherever he shops........I don't know how he got the tag
Back around 2000, before driver licenses got holograms, etc, my daughter knew guys at college who had software that could print a fake drivers license for any state. Something like a handicap tag would be trivial.
My sister abuses my mother’s (legitimate) parking pass ALL THE TIME.