The PRX D motor-driven reader is a special reader designed to retrieve business cards, when leaving visitors, preventing them from leaving the establishment with the card. Unlike with the single and double mailbox readers, the motor-driven system allows its installation in posts at 90º thanks to its electromechanical mechanism automatically introduces and ejects the cards. The PRX D motor-driven card reader includes a DESFire® 13.56 MHz card reader, with read / write capability that allows the use of DESFire® memory encrypted using 128bit AES or 3DES, to store the serial number of the card, avoiding the use of the CSN of the card to be unprotected and insecure. Thanks also to the ability to read / write, the PRX D motor-driven reader also allows the use of DOC SYNC™ technology for the integration of autonomous equipment.