Access control cards come in two formats, contactless and proximity. Each card works in tandem with a card reader that is situated by entrances to buildings or at the side of doors within the workplace to restrict access. In principle, the card is swiped or waved in front of the card reader, which then processes and verifies the information on the card before granting access. Access cards are deemed more secure than standard keys as if the card is ever lost, or gets into the wrong hands, it can be deactivated instantly. All of the access control cards we stock are genuine cards and are the best selling cards from all leading manufacturers such as HID, MIFARE® and Paxton.