I've heard it time and time again being repeated: "You should get one of those RFID-shielding wallets to protect your tap-enabled cards from thieves."
I know that thanks to the security measures built into the card they can't copy the chip with information they get from a card reader, so I'm not worried about that. But I've also come across many people who insist the bigger threat is a thief charging your card without you noticing it. I've seen warnings about that situation in ads for RFID-blocking wallets, I've seen in PSAs, etc. I'm aware this is technically possible, however I've always been under the impression that it's not a method thieves use very much (or at least not for very long) simply because of how traceable such transactions are and the thieves are sure to get caught quickly.
So my question is: are thieves really going around in crowds with payment terminals and making money off of unsuspecting people with tap-enabled cards (at a rate that should be a concern), or is that a made-up fear?
(I'm looking more specifically for answers pertinent to North-America and Europe, if that matters)
