System and method for granting access to a restricted access area using an approved list

摘要

A system and method for granting access to a restricted access area using an approved list is disclosed. According to one embodiment, the system may include a card reader that receives a card number from the access card; a card verifier comprising an approved list of card numbers; a card presented list of presented card numbers; and a processor that compares the card number to the approved list and compares the card number to the card presented list; and an access device. The access device grants access to the area if one of (1) the card number is on the approved list and (2) the card number is not on the presented list; and denies access to the area if the card number is not on the approved list and the card number is on the presented list.