SaiTech ITRFID Blocking Card, One Card Protects Entire Wallet Purse, NFC Contactless Bank Debit Credit Card Protector ID ATM Guard Card Blocker–(Black) (5 Pack)

I have seen more than one review of this product that says something like this: "I don't know how to test this product. I don't know if it works, but I guess it is working because I have not been hacked yet." (By the way, I think reviews like that are not very helpful.)Here's what I did (see the photo). I have a thin, bifold wallet. I put my two credit cards in the pockets of the wallet. I made sure that the chips for each of the credit cards were not next to each other. For example, one chip was at the "top" of the pocket and the other chip was at the "bottom" of the pocket. In the photo, I put a square that indicates where the chip is for the credit card I was testing.I put the RFID Blocker in another pocket of the wallet, behind the other two credit cards. So, the RFID Blocker was less that 1/2 inch from the credit card I was testing and separated from the test credit card by the second credit card and a couple of layers of leather.I ran this same test at a (1) a restaurant, (2) a grocery store, and (3) a home improvement store. The RFID Blocker and the credit cards were all stuffed into the wallet. When it was time to tap-and-pay, I opened the wallet and tapped on the credit card reader in the area of the yellow square in the photo. The credit card was not read and was not recognized. I then removed the RFID Blocker from the wallet and tapped on the credit card reader again in the area of the yellow square in the photo. The credit card was recognized and read, and the transaction went through.In all three cases, the RFID Blocker appeared to do what it is advertised to do.

This really works. I believe about a week after I got these I was targeted by one of these machines and several people surrounding me in a grocery store lot. I WAS PROTECTED. Jus Sayin...

This is tough to review as I don’t know if they work. But they came as pictured and as described.

It’s the size of a credit card and fits easily in my wallet. My wife and I each have one giving us the peace of mind that our credit card information is secure

Since I bought these and keep them around my cards in all my wallets or purses I have not had any more card fraud. I definitely recommend them.

I have used this and tested it. I have 1 in each of my family member's wallets. Well made, sturdy and it works!

good price. I hope they are working. I have not had any problems since purchase but I did not have problems before I purchased either. I bought for protection since it seems people are having more and more issues.

Not sure if it works