For Plug-Up Security Key (http://www.plug-up.com/), to make it work I added the following to '/etc/udev/rules.d/45-u2f.rules':
SUBSYSTEM=="hidraw", MODE="0666", ATTRS{idVendor}=="2581", ATTRS{idProduct}=="f1d0"
For Plug-Up Security Key (http:// www.plug- up.com/), to make it work I added the following to '/etc/udev/ rules.d/ 45-u2f. rules':
SUBSYSTEM= ="hidraw" , MODE="0666", ATTRS{idVendor} =="2581" , ATTRS{idProduct }=="f1d0"