Firstly, some of the negative reviews come from people who obviously don't read the details of how it works. This only works with certain cards, so YES and ID card will not be blocked, and Mil. identifier. I was at the airport paying for a purchase with my debit card then left and tried to buy another drink but I kept my card case next to my debit card the whole time and it was declined so proof is enough for me and they don't thicken your wallet to the size of a credit card. I keep my work card in the same wallet and I can log in undisturbed as the cards work on different frequencies.
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