First of all, this seller is great to work with. There was a problem with my order, and they addressed it immediately, no jerking me around. That's worth a lot these days. The wallet seems to work just fine. I'm not sure how to test whether it's blocking the bad guys, but I'll trust that it is. I ordered the pink, so it's bright, just a little flash of color on the occasions where I take out a credit card. I would recommend the product and seller to friends and family.