Manyi 5Pcs RFID Blocking Card, Protection Entire Wallet and Purse Shield, Contactless NFC Bank Debit Credit Card Protector Blocker (Black)

Color: Black 5 PCS Ultra-thin design, can be inserted into the wallet like a credit card, credit card, bank card, smart card and other ID signals will be effectively shielded, criminals can not steal the information inside your card, easy to use, safe and effective RFID / NFC Signal Blocking Card.RFID passive design, specially designed to shield high frequency (13.56MHz) smart protection card, no need to replace the battery, Product size: length 3.38inch width 2.12inch thickness 0.033 inch How Does it Work? The RFID Blocking Card is the same size as a standard credit card and 0.85mm thick with built-in internal circuitry.The RFID Blocking Card works by drawing power from the scanner, and emitting a counter-signal to jam the communication.This protects The surrounding cards within a 5cm radius.It can stop transmissions of personal information e.g.financial information, your name, date Of birth, account number being read by a remote RFID device.How to Test It Works.There are several ways to check if your card works just in case you want to be sure.The easiest way is at a self checkout at a local supermarket.When you go to pay, put the RFID blocking card on your contactless card and bring them close to the contactless card reader.You will find that the card cannot be read.'