Kinzd Ultra Thin Aluminum Metal Wallets - RFID Blocking Credit Card Wallet Holder for Men & Women - Best Card Protector with 6 PVC Slots

What is RFID?

Quoted from Wikipedia: Radio-frequency identification (RFID) is the wireless use of electromagnetic fields to transfer data, for the purposes of automatically identifying and tracking tags attached to objects. RFID tags are used in many industries, especially in payment card industry.


How the RFID protection card holder works?
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