I’m curious what they use currently because about a month ago, I used one of my debit cards I rarely use at a fast food restaurant and a few hours later, they tried buying some random crap online but they blocked those attempts. But my use at the fast food place wasn’t blocked. My guess is that the fast food workers at the drive thru skimmed my card and tried using it later that day.

I was surprised they were so accurate at detecting and blocking it. The transaction never went through or showed up on my side and the bank called me as soon as it happened.