OSDP is an open standard for communication between the controller and peripherals (readers, keyboards, biometrics). In practice, it is typically used on the RS-485 bus.
Why is it relevant for security
- Secure Channel: is capable of encrypted and authenticated communication.
- Supervize: the system recognizes sabotage/disconnection of the peripheral more reliably than with Wiegand.
- Interoperabilita: easier combination of components from different manufacturers.
OSDP makes the most sense where higher risk is being addressed: VIP areas, critical infrastructure or logistics with high value goods.