Multiple cards on one RC522

[Paul_B]

@UKHeliBob

The primary aim should be to get something working, not to get something "better" working.

Well, on the OP, he says:

@jek58

This is the working lines for that,

But then

@jek58

how do I add more?

Well, I simply suggested the answer is to start with a working code which provides "Authorised Access" to multiple cards, which is exactly what I provided.