So, I guess? there are no more mechanical card readers?

I guess the store will need to figure out how to adapt to stay in business...just like they did when they first started taking CCs using an imprint machine and mailing the receipts to get paid instead of taking cash only.

If they have a phone line, even a regular land line, they can use a magnetic swipe machine or chip reader. Otherwise, I guess they will have to just accept cash...or close the shop.

If they have internet connection, they can accept the new cards easily.

I suspect they will adapt.