Contactless Access Credentials Guide

Author: Brian Rhodes, Published on Sep 10, 2015

Few access topics are as complicated as contactless credentials. Chosing the correct one can be the difference between a secure facility and wasting big money. Understanding how they operate and what their specifications mean is a big challenge.

In this update, we cover the basic elements needed to specify the right contactless credentials everytime, including:

  • HID vs. NXP Credential Formats
  • 125 kHz vs. 13.56 MHz Frequencies
  • Facility Names
  • Facility Codes
  • Card ID/Serial Numbers
  • ISO 14443A vs. 14443B
  • Form Factors

*** ****** ****** *** ** *********** ** *********** ***********. ******* the ******* *** *** ** *** ********** ******* * ****** facility *** ******* *** *****. ************* *** **** ******* *** what ***** ************** **** ** * *** *********.

** **** ******, ** ***** *** ***** ******** ****** ** specify *** ***** *********** *********** *********, *********:

  • *** **. *** ********** *******
  • *** *** **. **.** *** ***********
  • ******** *****
  • ******** *****
  • **** **/****** *******
  • *** ****** **. ******
  • **** *******

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

Credentials ********

***** ***** ********** ******* *****, *** ********** ****** *** **** 'contactless' *****. ********** *******, ****** **% ** ******* *** *********** ***** ** **** built **** ** ********* ********** **** **** ** ******* *** read **** ******* ***** ** * ****** ****. **** '******** power' ******* ** ************** ****** ********.

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** *******, *** *********** *********** **** **** *** *** *** exact ********** **** ********* *********, **** ** ********** ****, **********, and ****** ** *** **** ******* **** ** *** *****. In *** ******** **** ******, ** ******* ***** ********** ** depth.

Contactless *********** ********* ** ******

*** ** *** ******* *********** ** *********** *********** ** *** format ** *** **** ** ********, ********* ********** ** *** manufactured **. ******* ** ***** ******** ** *********** ********************* ********* ** ************************* *************.

*** ********

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  • "*********": ** ***** ************, *** ***** ********* **** *** ********* **** ** *** systems
  • ******: ** *** ****** ******** **.** *** '*********'

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*** ********

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****** ***, ***'* ********** ******* *** '*******-****' *** *** ********* standards *** ********* *** ********** *** *** ** ****. *** manufacturers *** *** ***** ******* ** "**** *" *********.

US ** *** *****

******* ** *** **************'* ******** ********* *** **** ** *********, ******, *******, *** *** ********** derivatives *** ******* ******* *** **.

*******, *** ******'* ********* ******* *** ** *** ********, ********** in *** **. ******* *** ********** **** ** ********* ********* credentials *** *******,*** ******* **** ******** ******* **** **** *** ********** *** formats*** *** ***** ** ******* *********** ** * ******.

125 *** ** **.** ***

*** **********'* ** ********* ******* * *** **** ** *** performance. ******* ******* *** **** **** *********** ********* ** ******** matching ***********, **** ********* ** *** ***** ** ********. ** we ******* ** ******* ****** ********, ** ********* *** ****** **** *** *****, *********** *** simply *** ****. *** ***** ***** ***** *** ********* ** popular *******:

******* *** ******* ********** ******* *** *** *** **.** *** frequencues ** ********** ********. **** ** ********* ** ******* **. ****** *************, *** *** ******* ** *** ******* ********** *** *** be ******* ** *******. *******, **.** *** ******* *** ********* (usually *** *** *** ** *******) *** ********** **** *** only ** **** ** * ****** ************ ***** *** *** to ** **.

Deciphering ********** *****

*** ** *** **** *********** **** *** *********** *** *** users ***** ** ****** *********** ***** ********** * ****** ** using. *** ****** ** ******* **** ******** ** ******* **** no ********** ** ************* *** ***** **** *** ****** ** be * ***** ***** ****. *** ***** ***** ******* **** different ********** ***** **** ************ ********* *********** *** ******** ***************, yet **** *** **** *** **** ** *** ********* ***:

*** *********** *****, *** **** **** ***** **********:

  • ****** ****:**** ********** *** *** *** **** **** *** ********** *********, usually ******* ** ** *** ******** *** ******* *******. *** example ****** ** *** ******* ** *** ******, ****** ** HID's ******* ** ***, *** ** **. *** **** *** to ******* *** ****** **** ** * **** ** ** locate * *** ***** ** ******** *****, ** ***** ****** **********(*****'* ******* ******) ** ********* *** *** *********** ****** ** a ******** ******.
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  • **** ** ******: ** **** *****, *** ** ****** ** ******** ** printed ** *** ****. **** ****** ** *** '****** **' that **** * **** ** * ******** *****. ***** ********** numbers *** *** ** *****, ********* ******* ***, *** *** same **** ** *** ******** ***** ********** ****** ** ****** twice ** *** **** ******.

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The ***/*** ***** ********

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Smartcard ****************

***** *** '**** * & *' ******** ** *** ***** separates ******* **** ***** *** ****, ** **** *** ****** mean **** *** ******** **** **** *****. ******** ** *** 14443 *** *** **** ** **** *****, ********* *** '**** Serial ******'. *** **** ****** *******, **** ** *** ****** number **** ********** ****** *****, *** ******* **** ****** ** not *******, ** **** ******** ** '*** ********' *******:

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The *** ********

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Form ******

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System ******

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Comments (7)

Good information. Could be a bit more basic for readers that lack technology vocabulary and still learning it.

I agree.

Even a list of acronyms at the beginning of this article or in its own article would of been a nice resource. And maybe a "bird's eye view" article of what the components are to a complete system and then zoom in on the reader component.

Hello Keith

I strongly believe in having a bird’s eye view of access control systems and then narrowing down on the different aspects and ending with tying them up again will be a simpler approach.

This approach is also good because it has got me studying hard and discovering more personally.

It was quite interesting.

Oladipo

Great information but still a little more technical than I am used to. I usually troubleshoot software for card access systems, but this has been a great overview of how the system actually works!

Having been involved already in being asked by prospects whether their existing cards would work with our readers, I was hoping for more clarity on the issue, but it sounds like that's hard to get due to the complexity of the standards and formats.

Hello Guy:

This post is a general resource, but your specific questions are important! We can help. Which formats are you curious about?

This is a fruitful Contactless Access Control illustration. The article clearly explains the concept behind the structure and the operation of the contactless credential. I appreciate the info

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