I have set up a RPi with an NFC reader and everything is working fine. I'm using libnfcs nfc-eventd to read the tags.
In order to achieve my goal, I need to get the UID of the tag into an input field in the browser - this is the tricky part.
I tried playing with stdin/stdout and some other tools but I don't seem to get any results. nfc-eventd offers normal bash to start with, so I can use bash, py or whatever :)