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Why OSDP is Important for Access Control Technology and Solutions

Searching for or considering upgrading your access control system? Then you'll need to know a few things about OSDP, or Open Supervised Device Protocol, even as a customer. Here's our quick 6-point must-know guide to OSDP!

1. What is OSDP?

Open Supervised Device Protocol, or OSDP, is defined by the Security Industry Association (SIA) as an access control communications standard developed by the SIA to improve interoperability among access control and security products. It is a global standard for access control that is approved by both the SIA and the International Electrotechnical Commission (IEC).

2. Is OSDP for only certain manufacturers of access control products?

No - OSDP is open for use by any manufacturer.

3. So, why is it important?

Because it provides a guideline for various companies' access control and security products interoperability, meaning that, for example, a card reader by one company should be able to work with a door controller of another company.

4. What does OSDP offer?

OSDP offers the following:

  • encrypted communications between a reader and a door controller which is independent of encryption between a credential and a reader

  • point-to-point and multi-drop technologies

  • true bidirectional protocol for secure and confidential authenticated messaging

5. How is it built?

OSDP is built on the RS-485 serial transmission standard, and needs just four conductors

6. How does OSDP enhance security?

OSDP has higher cyber security than most typical access control communications protocol and can provide more secure communications by specifying FIPS-197 encryption.

GenX Security Solutions is a licensed security integrator with the OSDP access control technology that's right for your organization and location. Our quotes are always FREE. Find out more by calling 866-598-4369 or filling out a contact form at


Experience the next generation of interactive security services and solutions with GenX Security.

With custom security integration solutions come custom quotes designed for your needs. Please contact us by clicking here or calling 866-598-4369.



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