RFID reader registered, card IDs appear in the command line, but not appearing in Web Interface and no latestID.txt

[pdaBuildsThings]

Hi all,
I have a fresh V2 install, Raspberry Pi Zero W.
Version: 2.8.0 - 5044358 - master
Edition: Plus edition (feat. Spotify integration)

Running the following commands
pi@raspberrypi:~ $ cd /home/pi/RPi-Jukebox-RFID/scripts/
pi@raspberrypi:~ /RPi-Jukebox-RFID/scripts $ sudo python3 RegisterDevice.py
Choose the reader from list
0 vc4-hdmi
1 Sycreader RFID Technology Co., Ltd SYC ID&IC USB Reader
Device Number: 1
pi@raspberrypi:~ /RPi-Jukebox-RFID/scripts $ cat deviceName.txt
Sycreader RFID Technology Co., Ltd SYC ID&IC USB Reader

Scanning an RFID card results in a beep on the reader and the card number appears as text in the command line.
RFID Reader is listed as Enabled on the web interface settings screen.

No "latestID.txt" is present after scanning a card and the ID does not appear in the web interface.

What am I missing? Thanks very much for any assistance!

[pdaBuildsThings]

GAH! Permissions issue - "pi" user wasn't in the input group!

sudo usermod -aG input pi
and a login/logout cycle seems to have fixed it