Totally a good first implant when you don’t know what you want / need
We should be able to give you some direction
So, we will need more info to help you out.
You will need to do the same things for each thing you want to interact with.
There are a couple of tools and approaches to do these, one of the most simple, is to use your cellphone.
Scan your apartment, hotel, Uni and so on cards/ fobs, using something like TagInfo and then post the results and someone here will let you know what implants are likely compatible.
IF you phone doesn’t read the card / fob, it is PROBABLY an LF chip.
If there are no markings on the card / fob / reader, you will likely need a diagnostic tool to identify the Chip used. Something like a Proxmark3, If it is LF, the T5577 in the NExT you have, will most likely be capable of being a clone of your chip
The other easy way to narrow down what we are looking at, is by using the diagnostic card that you would have received with your NExT
Place this on the reader, and let us know if the HF / LF or Both LEDs light up, this won’t give us a definitive answer, but will narrow down our search, and if there are markings / logos etc on the card / fob /reader, this will again help narrow down further what we are looking at.
If I had to guess, you will PROBABLY be in the market for a Mifare Magic implant, something like an xM1 or FlexM1, but we can dive into that further when you come back with some more info for us.
Bare in mind, some things just aren’t compatible with implants, BUT there are a good number of things that are.
I hope that makes sense, Good luck, if you need more help just ask, and somebody should be able to help you out