The RFID where you tap the card and it goes through. You have to watch that. I have mine disabled on purpose. I went through a drive through once at a coffee shop. They had put 20.00 as the amount to be charged, When it was just a single coffee. I handed my card expecting to be handed the key pad thing to accept the charges and put my pin in. She tried to tap the card instead. That's when she discovered that it wasn't set up, and I found out she tried to charge a little too much... It didn't end well. Credit cards are Chip and pin now. But it used to be just sign (or pretend to) and you were good to go.
