Credit/debit card information protection cards and sleeves; information theft prevention cards and sleeves; RFID (Radio-frequency identification) and NFC (NEAR FIELD COMMUNICATION) protection cards and sleeves; RFID and/or NFC protection cards and sleeves for credit/debit cards; RFID and/or NFC protection cards and sleeves for passports; RFID and/or NFC blocking and/or jamming cards and sleeves; credit/debit card information shields; passport shields