The Paxton 830-050G green proximity cards from Identity provide a high level of security for access control management. They come with a shadow card for storing user data, which can be used to void a lost or stolen card to prevent unauthorized access. These printed ISO cards are available in packs of 50 and come in a variety of pack colors for color-coded zoning.Features:Proximity cards ensure secure access control managementCorresponding shadow card stores user data for added securityAvailable in packs of 50 with a choice of pack color for color-coded zoning