I have the NeXT rfid + nfc implant and I need this info and idk how to get it. I read the chip with a flipper and it doesn’t give me the info I need
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Likely the T5577 chip will need to be programmed to something your access system recognizes first. It’s probably easier in fact to copy your existing badge to the T5577 in the NExT using a proxmark3 or possibly even the flipper. What does the flipper think your badge is? Can the flipper read your badge at all? If so, can you emulate your badge to the door? If so, you should be able to write your badge data to the NExT’s T5577 chip to make a clone.
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So are you saying to read it then immediately write it back to it ?
I’m saying read your BADGE and then write that to the NEXT 
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I have no idea why access control systems do this.. start bit? end bit? wtf why.. so stupid. If the flipper screen is your current NExT ID as written, then the FC code is 251 and the ID part is the “card” part on the flipper; 26232 .. just start fucking around with start bit and end bit to see if you can see any “final” result that matches those values?
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Ahhhh sry long day thanks I’ll try this
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Once the data is read and displayed on the screen
select Save
Enter a name for the saved tag,
press OK
The saved tag will then be available under the Saved option in the 125 kHz RFID menu
Selet it, and press emulate and present to the reader
If it works
Go back to your saved menu.
Select write
I always suggest you write to a test card first before an implant. But you should be fine.
Let us know how you go
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