RFID Blocking ID and Boarding Pass Holder All newly issued U.S. passports and many credit cards now include an RFID chip (radio frequency identification data) with personal information Effectively blocks RFID readers for security Easy, hands-free check-in Travel documents and ID hang securely around your neck Fold-over front flap snaps securely closed Includes pen 82021 1680 D. Ballistic Nylon with Leather Trim Colors: Black Size: 5" x 5.5" x .5" US Patent # 6,766,932 B; Additional Patent Pending