DOKK / manpages / debian 11 / usbauth-notifier / usbauth-npriv.1.en
USBAUTH(1) General Commands Manual USBAUTH(1)

usbauth-notifier - Notifier for USB Firewall to use with desktop environments

usbauth-notifier

This program is installed with SUID bit set. The usbauth-notifier will call it to call usbauth firewall with superuser rights.

Example call:
usbauth-npriv allow/deny DEVNUM PATH

This program calls then:
/usr/sbin/usbauth allow/deny DEVNUM PATH
but only if the caller is
/usr/bin/usbauth-notifier