Hey. I may have worked in the badge industry, so this video I came into about Prox and RFID card cloning and ID collection is pretty enjoyable to me. Card Formats for building access, and many other cards like Credit Cards are into this stuff.
Quite silly because the old technology is in fact quite active, as of a few years ago when I was working that environment. Facility Codes, Badge Numbers and Card Formats. Such common terms we used. Especially when migrating an old system to your software platform of access control.
I did not do this talk, it is really good and hits on many terms and topics. Highly recommended if you are into the subject.