iCLASS Credentials In Access Control

Hi

Don't even know if this is allowed, if it isn't please feel free to remove and let me know. That is not a design question.

We have been tasked for a "difficult-to-break" access control system. We have been installed Access Control System now for a while, they have been Prox 125 KHz system. Someone on the customer IT department asked for iClass and the owner went with it.. So iClass it will be ... My question about iClass credentials:

Do they come with a unique ID that is translated by the reader as a Wiegand string?

Let me make myself clear, when one buys a 26 -bit Wiegand Prox , you have 65,536 unique numbers (2 exp 16) available for each of the 256 facility code (2 exp 8)... Is it the same when an iClass credential is purchased? The iClass credentials can be programmed of course but customer doesn't (yet) need that. Can we just purchase a bunch of IClass and be done? Are iClass out of the box, unique without any programming, just like Prox? (to a certain extent of course if they are only 26-bit) enough for the needs and customer can later customize/program the iClass cards.

iClass cards while being more secure and higher tech than Prox seems to be at the same price and often cheaper, often more heavily discounted. Is iClass on its way out? to be replaced by a different version?

I thank the collective in advance

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