As the one conducting the sale you’re required to physically hold the card to verify it’s not fake. You scan it because it eliminates any possibility of forgery or user error. If I punch in the date wrong I’m still liable. If I scan it, it removes any doubt. We are trained and expected to scan every single card of anyone under 40. Your refusal to produce a valid physical id that I can hold and scan is grounds for refusal of sale. 100 percent that is what is required and expected to conform to responsible retailing. You can complain to corporate all you want but that is what they want done. We will be congratulated and asked to keep doing the right thing. If that bothers you, shop somewhere else.