Sorta kinda on the correct track buddy.
The LF you can change the UID to match and access system or start your car, but you can also just enroll it into those systems if you have access to do so.
The bonus of the LF is the T5577 chip which can be changed to emulate many different modes (types), eg, EM, HID, Indala etc
The HF, you can enrol into compatible systems, and that compatibility depends on the actual systems and what it is looking for.
You cannot however change the UID OR the “mode” of the HF.
The HF Chip in the NExT is the NTAG216, so if that is compatible with the system you can “simply” enrol it, OR since the NTAG216 uses ISO14443A, if the system uses that, and is “looking” for a 7byte UID. Then you are golden.
The HF can also be written to with NDEF via NFC ( On your phone )
All in all the NExT is an awesome multipurpose implant.
Does that all make sense.
Just ask if you need more info.
Also, just as a hint, often the product description on the webpage holds A LOT of info,
But I know, sometimes when you are new to it, it can be a little overwhelming…
That’s why this Wiki exists ( Which I should give a little update )