HID Mifare DESFire EV1 Card

July 11, 2026July 20, 2022 by Marc Jacquinot

PACSprobe now supports HID Mifare DESFire EV1 8K SE physical access control credentials. It extracts PACS bit data and decodes raw Wiegand data to extract facility code and card number.

Note that this requires a card reader with on-board SAM (SIO processor). The following readers are supported:

OMNIKEY 5127CK/G2
OMNIKEY 5127CK mini
OMNIKEY 5427CK/G2
OMNIKEY 5023

The following screenshot shows the successful extraction of the card number = 4. We were using an OMNIKEY 5427 G2 SP2.4 reader in CCID mode for this test.

Note that the response time is very good, considering that this card requires mutual authentication under an AES key. It takes only about 300ms for the card & reader system to respond.

DESFire EV1 as HID card credential for physical access control

PACSprobe now supports iCLASS SEOS physical access control credentials. It extracts PACS bit data from the access control card and applies the appropriate card format to decode facility code and card number

Note that this requires a card reader with on-board SAM (SIO processor). The following readers are supported:

OMNIKEY 5127/5427CK (gen1 and gen 2)

OMNIKEY 5023

New PACS probe site

July 30, 2017December 27, 2014 by Marc @ CardWerk

New PACS probe site

Welcome to the PACSprobe software blog – a blog about probing physical access control cards via desktop card readers. I will publish notes about new releases, interesting features and many other things with regard to physical access control cards commonly used to access buildings and spaces. I am sure many of you are already familiar with physical access control cards a/k/a prox cards or fobs. They are widely used used to get access buildings secured with physical access control systems (PACS). PACSprobe checks such access cards electronically, using commercial desktop readers in the 125KHz (prox) or 13.56MHz range. So far we have integrated HID OMNIKEY 5025, 5125, 5325, 5326, and 5427 readers. I’ll write about details down the road. You might also check our website at cardwerk.com for software development services or check out smartcard-api.com, a site offering the libraries used to develop PACSprobe.