OSDP is Access Control’s International Communication Standard

The Open Supervised Device Protocol (OSDP) is an access control communication standard developed by the Security Industry Association (SIA) to facilitate secure communication

The difference between OSDP and Wiegand protocols:

*Standardization
OSDP is an open and standardized protocol, facilitating interoperability between devices from different manufacturers. This promotes a more open and competitive market for access control solutions.

*Security
OSDP enhances security by using advanced encryption and authentication methods, reducing the risk of unauthorized access and tampering.

*Bi-Directional Communication
Unlike the Wiegand protocol, OSDP allows for bi-directional communication between the reader and control panel. This enables more robust data exchange, including the ability to confirm successful card reads and receive status updates from the devices.

*Increased Range
OSDP supports longer communication distances compared to Wiegand, making it suitable for larger and more complex access control systems.

*Tamper Detection
The protocol includes features for detecting tampering or unauthorized access to the communication line, improving the overall security of the system.