Security credential readers connect to an access control controller through OSDP or Wiegand, sending information from proximity cards, high-security smart credentials, mobile devices, or PINs for authorization. OSDP supports secure communication and multi-drop wiring for multiple readers, while Wiegand provides a widely used connection option for compatible access control systems.

Choose a mullion reader for narrow door frames, a single-gang reader for standard electrical boxes, or a keypad reader when users may enter a PIN in addition to presenting a credential. Confirm that the reader supports the credentials in use, such as proximity, high-security smart credentials, or mobile credentials, along with the access control system’s communication method, such as OSDP or Wiegand.

Security credential readers that support proximity, higher-security smart credentials, and mobile credentials let integrators keep existing cards or fobs in service while introducing newer credential types. This multi-technology approach supports a phased migration, so organizations can add mobile or encrypted credentials as users, doors, or access policies are updated.

When deploying security credential readers across multiple access points, select a mullion, single-gang, or keypad form factor that fits each opening and confirm whether the access control system supports OSDP or Wiegand communication. OSDP multi-drop wiring can connect multiple readers along one cable run, which may simplify routing, while proximity, high-security, and mobile credential options should match the credentials used at each access point.