Chip compatibility matrix - Google Sheets

Expect improvement with time

Yep, that’s not surprising, but the xFD will give you a more realistic expectation of how/if the NExT will read and the optimal position and orientation of the antenna

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Screenshot 2023-05-05 at 11-03-39 403.58CZK 5% OFF IP66 Waterproof 125Khz RFID Access Controler Rfid Card Reader for Access Control System 2000 User Capacity Access Control Kits - AliExpress

Reporting that the 125khz version works fine with the LF side of NExT. Possibly can be hacked using just a knife but fine for low security applications.


Thanks for that, I’ll try add that to the Matrix tomorrow

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Also the NeXT LF side comes in EM format, which I don’t think a HID reader will recognise. So once you allow sufficient healing time (about 2 weeks), you need to set it as a HID card.


reading in the excel file, the reader seemed to be compatible the NEXT chip for the LOW part.

but if you set it as HID, then my gate openings no longer go after that ?

the strange thing is this:
i installed the chip 10gg ago and it seems to work fine with everything (except work reader).
the chip does not make any sound when passed in front of the HID work reader.
IF I pass my blue badge (which I use at home with my gates) the job HID reader makes error sound, (so it is at least recognized)

so why does the chip make no sound and the badge does with the HID job reader ?

my badge (work for my gate):

Your deductive logic is good

So in theory, your NExT that works on you home reader, SHOULD make your work reader operate.
The NExT has a tiny antenna, and for it to couple to a reader(communicate), the reader antenna often times needs to to meet one or a couple of criteria such as close to the surface, a specific shape or high power.

As I mentioned above, You work reader doesn’t look particularly well suited to an xSeries sized implant, but without seeing inside it i cannt be certain, and I dont know how practical it would be to modify the readers.

THE biggest problem you have though is, your home reader and work reader use 2 different modes, and you cant run your implant like that. HOWEVER since your Work reader beeps with your home fob, there is a possibility that your NExT will be able to be enrolled in what I assume is EM mode…

I would still wait the 2 weeks before being certain of its compatibility.

At the end of the day, i simply may not work and youll need to modify the readers OR get yourself a FlexEM

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hello everyone,
at this point, I can confirm that my company’s SOLAR reader:


It is NOT compatible with NEXT chip Low freq chip.

I also passed the light key fob and it never turns on :frowning:

if i instead pass this key tag holder (which works on my home EM reader as NEXT chip) it sounds error, but at least it sounds so it is detected.


the reader at work accepts this HID card:


I would have liked to program chip access, but I guess I can’t.
thank you all for the help and can you add the non-compatibility in the excel sheet for this solar and next


I’ll just leave this here for when I update it later


This KR100E/KR101E 125kHz reader also works with LF side of NExT programmed as EM4100. Range: needs some effort to produce a read without touching the reader.

Screenshot 2023-05-09 at 00-48-04 302.94CZK 12% OFF Waterproof Rfid 125khz 13.56mhz Ic Card Reader Access Control Card Reader Wiegand 26 34 Output Door Access Control System Kr101e - Access Control Kits - AliExpress


just to make another visible demonstration on this reader:

in the video you can see:

  • Rfid Low Freq EM key fob that works with my gate, and with the work reader from ERROR (so it is read)
  • xled that never turns on the led
  • chip in NExT hand with Low freq part that always works in my home gate, and here it doesn’t even sound error
  • company card that obviously works perfectly HID

I would say you can take the compatibility out of the excel table

hope i was helpful :wink:


On Monday I will try again with xled

Today I pravo with the reader present on my office printers, this:

this is its guide:
Kofax ID Card Reader User Guide (

and guess what ? it is read, I logged in with my user on the printer touch panel and I can enable the office print queue.
however i can’t access the office, maybe the CDVI is really deep the plastic piece and it doesn’t reach to receive the antenna, cmq i’ll try with xled as already mentioned, i’ll keep you updated

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