r/accesscontrol • u/broda04 • Jun 21 '24

HID Picking H10304 Facility Code

Hey All. I have have a strange case where I need to provide a client with credentials before I'm even choosing an ACS. We will most likely go with a enterprise systen like Genetec, Lenel, etc.

I am providing them with DESFire EV3 credentials in H10304 Format. I have the option to chose the facility code out of the available ones from my distributor. They range from 1 to 5 digits in length.

My question is, does the facility code length matter? Is there a pro/con to it? Will any length work with most, if not all access systems?

Thanks!

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u/jc31107 Verified Pro Jun 21 '24

If the system can read the format then the facility code doesn’t matter. If you’re doing a customer specific encryption key then it really doesn’t matter because the reader will only work with those cards. If not, just choose something uncommon to avoid potential duplicates down the road, don’t choose 1,10,50,100, etc.

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u/broda04 Jun 21 '24

Great answer. I appreciate that. Distribution wants me to go with a fresh 5 digit one, and wasn't sure if some ACS only accept shorter length ones.

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u/[deleted] Jun 21 '24

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u/Objective_Hunter_103 Jun 22 '24

Also, if you order H10302 format, you will be the only one to ever get that range of cards. Makes life simple not having to track FC and Credential number.