Clone NXP - Mifare Ultralight 14443-3A

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I’m not sure if this goes in Projects or Support, but I chose to put it here. Also, everything I know has come from ChatGPT over the past few days, so take everything with a grain of salt.

I’m looking to get an implant that I can use as my “seapass” card on Royal Caribbean cruise ships. I’ve scanned a card I kept from my last cruise using NFC tools and this is the information that I got.

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I assume that the right implant would be the flexNT. (am I correct?).

Would I be able to clone a new card to the implant each time I get onto a new ship?

How would I go about cloning the card?

Alternatively, I was thinking I could get a “WOW Band” and clone that to the implant. The wow bands are reusable and would be added to my account so I wouldn’t have to reprogram the implant every time. Would the “Wow Band” use the type of chip as the seapass cards?

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Use NXP’s TagInfo not NFC Tools. And no, you cannot clone anything to a flexNT.

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youd want the flexUG4 for this.

The ntag in the FlexNext cannot change its UID which you would need to make a full clone, also the FlexNext is an ntag, not an ultralight (though they have similar architectures, they are not always cross compatible)

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I scanned again using NPX Tag Info, but since I have an iPhone, I only get limited info.

It does show Ultralight C though. The FlexUG4 page shows that it can emulate Ultralight EV1, but not Ultralight C. Is that true and would that be an issue?

“[Royal Caribbean] uses a 13.56 MHz NXP Semiconductors Mifare Ultralight C RFID chip compliant with ISO 14443 standards” (found online)

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it can do ultralight C but not auth with anything other than default passwords

royal caribbean uses default passwords

get a proxmark3 easy and a UG4 test card to confirm it works before getting an implant.

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Am I on the right track? What does this tell me and where do I go from here?

This is the Royal Caribbean card:

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This is the test card that came with the Proxmark:

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this is irrelevant because it’s a different chipset

in order to clone that Ultralight C, you will need a USCUID ULC

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I tried getting an UG4 test card, but they were unavailable at the time I ordered. Would I be able to clone it to a flexUG4?

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you’ll need to use a test card before the implant, if the reader authenticates the password the ug4 won’t do it

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I have not purchased from this source, but I recognise the name.

Another source:

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Yeah, probably from the app

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You can buy a number of RFID related products through the app

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