What kind of implant, Yale Doorman

[Pilgrimsmaster]

Hi Kenneth,
Welcome, It looks like you have done some research, so this should be easy for you.

@RazAquato

At work, I have an ID card, using “NXP Mifare Classic 4k”

Can you do taginfo scan and let us know if it is a 4 or 7 byte NUID?

If you get stuck

How to share NFC chip data via TagInfo app

TagInfo is an app made by a chip manufacturing company called NXP. It does a decent job of determining the type of chip it’s talking to and fully scanning any accessible memory into a scan report. It also makes sharing information gathered easy, which makes diagnosing problems or answering questions about specific NFC tags one might have much more efficient. Android iPhone [Sharing microchip implant data with TagInfo] Do note that iOS has some serious limitations still when it …

But I would reccomend you remove/hide/blur your actual NUID before posting in a public forum.

@RazAquato

My plan is to clone the Yale tag and the ID card. – but I wonder: do I need two implants

If your NUID for your work ID is 4 bytes, I would CLONE your Work ID and write this to your FlexM1 (or whatever you choose) then I would ENROLL into your Yale.
i.e. You should only need one

EDIT
See @anon3825968 reply below, some better info than I provided

@RazAquato

I also have a travelling card using Desfire ev1, and I’d love the idea to clone this as well, but only if it could go on the same implant as above, as it is rarely used

This is pretty unlikely unfortunately.

I am going to post a public transport conversion shortly,that will kinda explain why.
It is doable, but just for your specific scenario.

@RazAquato

I am also interested in the xEM Access Controller. Is that only compatible with the xEM/next chip,

xEM Access Controller is only compatible with Low Frequency 125kHz, so only xEM, NExT, FlexEM, FlexMT etc

@RazAquato

Final question

You shouldn’t need to do this, just let us know your NUID byte total and we can help you from there