Security Sales & Integration April 2021 - 36

Access	

The Power
of an OPEN
PROTOCOL

Interoperability and
securing security
lies at the heart of
the revamped Open
Supervised Device
Protocol (OSDP).
Learn the what
and why of OSDP,
which provides a
set of commands
and responses
while predefining
encryption and
authentication.
By Stephen
Sheppard

T

he Open Supervised Device Protocol (OSDP) is an access control
communications protocol nurtured by a Security Industry Association (SIA) consortium, consisting of some
of the smartest individuals from the security industry. Version 2.2 of the SIA OSDP is its most
recently updated standard that improves interoperability among access control and security
products such as readers and controllers. The
standard also applies to peripheral devices such
as card readers and other technologies at secured
access doors/gates and their control panels.
Already in use by many leading manufacturers, the SIA OSDP standard is recommended
for access control installations that require advanced security or will be used in government
and other higher-security settings such as data
facilities and drug manufacturing programs.
OSDP supports advanced user interfaces, including welcome messages and text prompts.
Audio-visual user feedback mechanisms provide
a rich, user-centric access control environment.
A two-way channel and encryption pave the

36  Security Sales & Integration APRIL 2021	

SS2104 pp36-40 OSDP.indd 36

way for advanced security applications such as
the handling of smart cards, biometrics and government applications that require Public Key Infrastructure or Federal Identity, Credential and
Access Management requirements. Not only
does OSDP provide a concise set of commonly used commands and responses, it eliminates
guesswork, since encryption and authentication
are predefined. How does that impact security
equipment manufacturers, integrators and users?
Among other things, it lets security equipment, such as card and biometric readers from
one company interface easily with control panels and equipment from another manufacturer.
In other words, OSDP fosters interoperability
among security devices. It also adds sophistication and security benefits through features such
as bi-directional communication and read/
write capabilities.
It provides the transfer of large data sets for
firmware updates or graphics from an access
control unit to a reader, clearer instructions
for the implementation of Secure Channel,
the OSDP encryption piece, to facilitate ensecuritysales.com

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Security Sales & Integration April 2021

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