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Holographic RFID Blocking Card Holders (10-pack) : ID 5349 : $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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Silver RFID Blocking Card Sleeves (10-pack) : ID 5350 : $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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14pcs RFID Blocking Sleeves, TSV Waterproof RFID Blocking Security Sleeves, Credit Card Protector Holders, Identity Theft Protection Secure Sleeves for Debit Cards, Protect Subway or Green Card - Walmart.com
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