Wiegand vs OSDP

Author: Brian Rhodes, Published on Mar 19, 2014

Wiegand has been the standard access communication protocol for decades. Despite advances in credentials, and the move to IP controllers, the connection between readers and controllers is startlingly unchanged. The Open Supervised Device Protocol (OSDP) aims to surpass Wiegand, but what advantages does it offer, and does it have industry support?

We take a deeper look in the note.

Key Contrasts

Comparing the two protocols is not difficult once their function is understood. In terms of a typical access system, the data link between credential reader and door controller is key. This link is where 'Wiegand' and 'OSDP' are most relevant.

The prime features of either protocol stack in the chart below:

******* *** **** *** ******** ****** ************* ******** *** *******. Despite ******** ** ***********, *** *** **** ** ** ***********, the ********** ******* ******* *** *********** ** *********** *********. *** **** Supervised ****** ******** (****) **** ** ******* *******, *** **** advantages **** ** *****, *** **** ** **** ******** *******?

** **** * ****** **** ** *** ****.

Key *********

********* *** *** ********* ** *** ********* **** ***** ******** is **********. ** ***** ** * ******* ****** ******, *** data **** ******* ********** ****** *** **** ********** ** ***. This **** ** ***** '*******' *** '****' *** **** ********.

*** ***** ******** ** ****** ******** ***** ** *** ***** below:

[***************]

** *******, **** ****** * '**** **********' ********* *** **** exchange ******* ****** *** **********. ****** **** ********** *** ****** access ******* *** * **** *** **, *** ******* ****** early *** ********** ********** ***** ****** ******* *** ***** * simple **************. 

Wiegand ***********

*******, ** ******* **** ********, *** ********** ** *********** **** more ******, ******* *** ***** ** **** ********** ***********. **** prominent ***** ****:

**************:******* ****** ****** *** **** ** ******** ** *** ********** and **** *** ******* *********** **** *** ****** ** ***. In ***** ** ******** **************, ********** ****** ******, ** ******** security ****, *** ****** *********** ** ** *** ****.

******* ***********: **** **** *** *** **** ***** * ***** *********** credential ** ********** ***** ** ******. ** *** **** ********** ********** *******, *** ******* ** **** *********** ** ******* ** **** limited. *** ******** ************** ** **** *** ******* ******, *** ****** ** bits **** *** ** ******* *********** ** *** ********** ** limited ** **** ***** *** ****, **** *** ********** **** itself ********* ******** **** **** ** ****. **** *** ****** ** **********, **********, *** ********** ********* *** bits, *** ****** ** **** ** **** *** ********************* ******* ** ****.

******** *********: ***** **, ******* ******* *'****' *** '******' ****** ** ************. *******, **** **** ***** sizable **********, ***** **** ********** ********* ** ***** *****, ********** finding **** ********** ****** ********** ******-*** ****** ************* *** ********** **********/** ********

ODSP *** ********

*** *** ******** ****** ** ***** ********** *** ******* ** offer:

**-***********: ******** ************* ** ****** **** **** ******* ******* ** real ****, **** ******** ****** ********* **** ****, ******* ********, or ******* ******** ** ** ******* ***********. ********* ** *** reader, ******** **** ******** **** ** **** ****** *** ****** based ** *** ****** ** *** ****** ****** *** ******. 

********* **********:** ** **** ***** ** **** *** ** ******* ** OSDP, *** ******* ***** *********** *** ** *********** ** *********  in ******. **** ***** **** *** **** **** *********** ** bit ********* *** ******** ** ******* ******** * ********** (***********, face, ** ****) ** * ****. **** *** **** ******** a ********* ****** ** *********, ** ********* *** *********** ** **** ******* ********** *** ** ****, **** ******** *** *********** ****** ** ***** ******, ********* in * ******* ***********.

******** *********:**** ********* ******** **-***, *** ** ****** *** ******** ** apply ** ***/** ** ****, ************ ********* *** *********** ***** standard ************ **********.

Cabling ********?

******* *******, ******** *** ******** ******, ********** ******* *** *** is ****'* ******* ** ***** ******** ******* ******** ** *** same ***** *** **** **** ** ********** *********. ******, **** compared ** *********** '*:*' ******, **** ****** **** ****** *** ** * **********, ***** **** **** ******* ** ******* can ** ************** **** * ****** ***** **** ** *** controller. *** ***** *****, ******* ******** (*** ****)** ******* ************* *** **********:

**** ************* ***** ***** ** *****, ******** ** **** ** a ********** ********** ** **** ********** *** ** ******** ****** of ***** ****** *** ******* ** *** ******* **** **** position ******** ** *****.

*******, **** **** **** ********** **** *******. ************* ******* **** been ********* ** *********** *** * ********* ******* **** ***** power, *** ********, ******* *******, *** ****** ** ********* **********. OSDP **** ******** * ********* ******* *** ****** *** **** range ** *********, *********** ****** * ******** **** ** *****.

Industry *******

***** *******'* ******** ******* ** ********** *** *** '*******' ********, **** shares *** ******* ** *** ******* ** *** ****** ******. Notably, ****** *** ********** ***** *** ********* ******* *** ********, ***** **** **-***** **** ********** *** interface ************* ******** **** ******* *********** *********, *******, *****, ******** (******** ******** ****) *** ******. *** upcoming *** **** **** ******** ******* ******* ********* ****** ******** *******:

Does ** ******?

**** **** ******* ******* *********? **, ** **** ***. ****** Wiegand **** ****** * ****** ******** *** **** ******* *** many *****. *******, **** ***** ***** ******* *** ***** *********** advantages, ****** ** *** **** **** ******** *** ********** ****** *** basic ********* **** ** ******* ******* ** ***********.

Making *** ** ****

********* ******** ******* ** *** **** ** *** ****** * need, ****** ******** ****** ********** ** ******* ** *******. *** data ************ ******** *** ** ******** ** ***** ***********, ***-******* formats*** **-*********** ************* ******** ********** ******* (** **** *********) ** not ***** ****. **** ****-******** *********** *** **** **** ****** but *** *** **** ******** ** *******, ********* ** **** is *** ****** ********** *** *** ****.

*******, *** *** ********, ***** **** ** ********** *** *** likely *** **** ******. ** ********** ****** ** ******* *** controllers ******* *** *********** *** ****** **** ********** ** ***** *****. ***** *** *********** **********, ** ***** good ***** ** **** ******* ****** ***** *** *** ********* rather **** **** ****** ** *******.

Comments (13)

**** ****** **** ********* ** ******** ** *** ****** ********* plans.

******** ** *** *** ***'* * **** **** **** *** years **** ******** *** (** ***, **** ***** ****), * have *** **** *** *** ********* ******** *********** **** **** or ****** ** ******** **** ****.

* ******* ****. ** **** *****, *** ******* *********** *******/*********** are *********** ** *********** ********, *** *** ********* ***** ********, ie:

"*********** **** ** ***-*********** *** **** **** (********** ****** *******)***-****" ******* *******."

********** **** **** ************* **** ******* **** *** **** ** credential.

* ******** *****. ***** ** ** *** * *** ** iClass, *** ******** ** ********* ****** **** *** *********** ****** than *** ******** ********.

******* *******, ******** *** ******** ******, ********** ******* *** *** is ****'* ******* ** ***** ******** ******* ******** ** *** same ***** *** **** **** ** ********** *********.

*****, ** *** **** ** ******** ***** ** *** *******, with **** ****** ********** ** * ********** ******* ********** **** practice?

**** *** ******** ****** *** ************ ******* *****, **** *** not ******* ** * ****-*** *****?

*** ***** *** ***** ******** ************** **** **** ********?

*** ***** *** **** ** *** ********** *** ******* **. OSDP? **** ** **** ** **** *****?

**** ******** ** ****** ******* ** **** *****. ** *** controller ***'* **** ** ******* (** ** ***), ***, *******, or ****, ***** ** **** ******. (******** **** ***** ****** moving *******.) ***** ********* **** ******* ***** *** ***** ********** supports **** ** *** **** *****, **:

** *** ***** ****, * ***'* ***** *'** **** * controller ** *** **** *** ***** **** *****'* ******* *******. (Even ****-***** *** ***** '***********' ******* ********* ******* ** *** controller.) ** ** *********** *** ******** ******** ** **** **** readers.

*** ***'* *** *** ******** *** ****?

**, ** **** ************ ***** **** ** ** ******* ****** than * ****** ********** **** *** ********** ** *** ******? Wouldn't **** **** *** *** ** ********* ***** ********? ****** you **** ** *** *** (*) ********* *** ** ***** set. *** **** ** **** ** ** * **** ** a *****-******* ****** ****** ** ** *********** ***** *****'* *** potential *** ***** ******.

*** **** ** **** ** ** * **** ** * daisy-chained ****** ****** ** ** *********** ***** *****'* *** ********* for ***** ******.

****.

** **** *********, *******, ***** **** *** **** * ***** in **** ***** ***** ** *********** ******** ** *** **********, while * ******* **** ***** *** *** ***** **** ** an ********** '******' **** **********.

***** *** *** *** *************.

****** **** **** ** ******* ****** ****** ** * **** pace. * ****** *** ******* ** ******* ****** *******.

***** *** *****. **** *** **** *****-**** ******** ** **** more **** **** **** *** ** ********. (**********: * ***** the **** ****** **** ************** **** ** *** ********.)

**** ***** **** ** *** * ** * *******. *** image **** ***** *. * ***** ****** ** ******* **** to ** ****. *** ***** *** ****** ***** * ***** because ** ******* ** *** **** **** *** *** *******. Yes **'* **** * *** ********** (*** "********* *****".) *** if *** *** *** **** ** * ***** ***** *** kill *** *** ********** *******.

***** *** ** ***** **** * ***** **** ******* ********** OSDP *** *** ****** ********* ** ********. **'* *** **** a ******* *****.

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