Mifare Plus Card Activation and Personalization

Question

I finally got all the NDA documents required to know how to communicate with the Mifare Plus (X) cards I have. However, I still have a couple of questions that were not answered by the docs so would appreciate any help. I realise the information may be under NDA, in which case could you please point me to the information rather than stating it outright. The questions are:

1. The docs mention activation into the ISO 14443-4 mode. How do I do this?
2. Is there a way to check the current security level of the card?
3. Is there a way to check whether personalisation of a card has occurred?

Thanks

Answer 1

Answer to 1.: Send a RATS command, as defined in ISO 14443-4

Answer to 2.: Check Table 6 in AN10833 "MIFARE Type Identification Procedure"

Answer to 3.: In general, no.