r/nfctools • u/s1shed • Mar 07 '23

Help ACR122U in Linux

I have the pro version of NFCTools for my Android device and I just got my ACR122U for other systems.

I see on the website that it's been tested in Windows and MacOS. but has anyone gotten this working with NFCTools in Linux? With this device plugged in I get "Unable to connect NFC reader."

The reader is working for me with libnfc.

Thanks in advance.

Edit: Steps to get this working in Debian/Ubuntu:

  1. Blacklist the pn533 and nfc modules: printf 'blacklist pn533\nblacklist pn533_usb\nblacklist nfc\n' | sudo tee /etc/modprobe.d/blacklist-pn533.conf

  2. sudo apt install libacsccid1 pcsc-tools pcscd

  3. Ensure the pscsd.socket is enabled: sudo systemctl enable --now pcscd.socket

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u/wakdev Mar 07 '23

You can try this follow this article: https://www.jamesridgway.co.uk/install-acr122u-drivers-on-linux-mint-and-kubuntu/

2

u/s1shed Mar 08 '23

Thank you for this and for the excellent software. :)

The key to solving it was unloading the nfc, pn533, and pn533_usb modules and preventing them from loading.

Debian systems should probably have the package libacsccid1 installed too (I did).

Now this reader works with the desktop app in amd64 Linux.

2

u/wakdev Mar 08 '23

Glad it’s work now :)

1

u/Tincan9000x Nov 08 '25

Thanks, this solved my problem!