This title is odd. Business that have ATMs instead of credit card machines are already cash only. It would be more accurate to say "without power to run credit card machines, Puerto Rico is cash only."
It would be nice if there was a credit card machine that was powered by the phone line directly.
Edit: Most of the small businesses I worked at growing up in rural Oklahoma had mechanical imprinting machines with carbon paper receipts so that they could process credit card payments offline.
It would be nice if there was a credit card machine that was powered by the phone line directly.
Edit: Most of the small businesses I worked at growing up in rural Oklahoma had mechanical imprinting machines with carbon paper receipts so that they could process credit card payments offline.