NubianProx Credentials to Pyramid Access Control System. Compatible to Pyramid 26bit PVC Cards. Pyramid 26bit Clamshell card, Pyramid ID Key fobs, Pyramid proximity Tags 26bit Format. Proximity cards are available in a wide range of styles, so you can pick the card type that will work best for your organization: Standard PVC cards ; Composite cards; Printable PVC or composite cards; Clamshell cards; Cards with magnetic stripes; Key fobs; Adhesive tags; Wristbands