ruby-nfc

NFC library for Ruby programming language

Prerequisites

Download and install libnfc. Or if you're using Ubuntu: Enable "Universe" repository and then:

apt-get install libfreefare-bin

You may need to copy some system files from libnfc tarball:

sudo cp ./contrib/linux/blacklist-libnfc.conf /etc/modprobe.d/
sudo cp ./contrib/udev/42-pn53x.rules /etc/udev/rules.d/

Look at lsusb output and make sure that your reader is present in 42-pn53x.rules
Download and install libfreefare
Install appropriate driver for your NFC reader
Reboot your system