HID vs NXP Credentials
Author: Brian Rhodes, Published on Sep 12, 2013
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Comments (5)
Undisclosed
Philips (NXP) introduce Mifare in 1994, it is compliant to ISO 14443A, parts 1-3 while DESFire was introduced in 2002, it is compliant to ISO 14443A, parts 1-4. iClass, using Inside Contactless's chip, was introduced in 2002, it is also partially compliant to ISO 15693, primarily to operate at lower speeds over longer ranges, or, the majority of installations.
Compliance does not mean interoperability. ISO standards (ISO 14443 and 15693) do not specify: Encryption use, Key Management, IC's memory structure, memory access or application data structure which are rather important unless you are using the CSN for access control. When reading a brochure, just becuase it lists "support" for NXP Mifare, HID iClass, Legic advant, or Sony FeLica does not mean the reader is reading anything other than the CSN per the ISO standard.
ISO14443A uses 100% modulation, meaning that the reader stops emitting the field for defined periods of time. The modulation for ISO 14443B is only 10% which preserves the continuity of the clock. There was an attempt by Sony to specify FeliCa as "ISO 14443 Type C", but is now standardized under the NFC umbrella specification ISO 18092.
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Undisclosed
Just a quick question. Do I need to understand the different ISO standards in order to know what cards will work with what reader. I am not an engineer and am trying to grasp what will work with what.
Feedback welcomed. Thanks.
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John Haselhorst
This section is much like the Credentials Guide in the first part of the class. Emphasizing the nonexistence of interoperability of a credential unless both reader and credential utilize the same ISO standard is a great point.
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