I deal with high end sales and cc transactions dally. We have great margins on most of our products but have been lucky to not take a hit.
Any sale above 4k we require a photo of State I'd covering all but the last 4 numbers of a cc. I have yet to have one business or end user protest this internal requirement. It protects all party's of the transaction from fraud.
Sorry to hear about a POS scamming pin heads but sadly many exist in Los Angeles.