QeeaHuuo 4PCS RFID Blocking Card, Protection for Entire Wallet Shield, Credit Card Protector NFC Bank Debit Blocker, Identity Theft Prevention for Passport Travel Security (Ver.3.0)

It’s works size is pretty good and superb thanks again.

I’m a big NFC guy. I’ve ordered hundreds (thousands?) of NFC cards and coins. I programmed my own for home automation, handed out as a scavenger hunt, and even put stickers on them and programmed them for a contest. I dig everything about the NTAG213/NTAG215 features and functionality.But with that amazingly easy use of a simple tap comes a privacy concern. Anyone with a reader can wander by a card in your pocket and capture the information. No need to see it - and some higher power readers can be far enough away they can read items inside a purse while standing next to you. Enter the market for RFID/NFC blockers!I’ve also used my fair share of RFID blocking wallets, sleeves, and of course the tinfoil wrap. (That’s where the tinfoil hat idea comes in - it can block RF.) Some work “ok” and some not at all. But THESE card are amazing! Truly the first RF blocking card I’ve used that actually blocks even if it is behind the NFC card. I’ve tried others that make such a claim but they have simply not worked. But these do!This pack of 4 is a steal at the price. I was able to secure 4 cards with a single one of these in the middle. That’s impressive protection - and far beyond a simple shield. The tech in these truly does have “advanced” protection that attracts the NFC/RF reader and makes it into a black hole.Super happy with these and will likely be ordering them as gifts!