6 Pack of Safety Sleeves Rfid Protectors Credit Card & Identity Theft Protection. These card holders are designed to shield RFID signals. Secure sleeves create an RFID shield by blocking the electromagnetic energy necessary to power and communicate with contactless smart cards. Illegal RFID credit card readers can't access the information stored in your credit card RFID chips. Protect your magnetic card from EMI damage, which would cause information lost.This happens a lot if you put your card near your cellphone too often. Protect yourself from payment fraud and other difficulties.
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