As an alternative to the traditional mechanical key, millions of PAC proximity cards and fobs are used by people as an easy and reliable means of gaining access to their places of work and other secured access points e.g. car park barriers and turnstiles. The ISO proximity card is 'credit card' thin, ISO 7813 compliant with a nominal thickness of 0.03 in., it requires no batteries and carries a lifetime warranty. The card may also be ordered with an optional 26-bit Wiegand code sticker (7S-D8239) or with a magnetic stripe (7SK2011M). Manufactured from white flexible polyvinyl chloride (PVC), the card is both strong and durable enabling digital photos and graphics to be printed directly over the front and back surfaces using an ID card printer, or via an adhesive PVC overlay with most direct image printers. Easily carried in a wallet or purse, the ISO card can also be worn on clothing with a clip or neck chain through the use of a specially designed optional card holder. Robust, world-class construction combined with advanced technology and a pre-programmed unique identification number without site codes, makes programming easy and secure. Together with Readykey™ for Windows or PAC Access security management software, this ISO card enables a user's movements to be monitored and the building protected. The card need only be held near a PAC door reader for the code to be read and access granted or denied within 0.5 of a second. In the event that the card is lost or stolen, it can easily be replaced and the lost cards access privileges, simply and instantly revoked.