acr122u installation

Installing prerequisites on Ubuntu or Debian:

sudo apt-get install pcsc-tools pcscd 
sudo apt-get install libpcsclite-dev 
sudo apt-get install libpcsclite1 
sudo apt-get install libusb-dev 

Modify /etc/modprobe.d/blacklist-libnfc.conf

blacklist nfc
blacklist pn533
blacklist pn533_usb

Redemarrer la machine ou lancer:

sudo modprobe -r pn533_usb
sudo modprobe -r pn533
sudo modprobe -r nfc