User:Ned Scott/Sandbox

First you have to create an own udev rule to ensure, that your device nodes are always the same.

We get the vendor id and the product id from /proc/bus/input/devices:

cat /proc/bus/input/devices

the output is something like this:

...

I: Bus=0003 Vendor=05a4 Product=9881 Version=0110
N: Name="HID 05a4:9881"
P: Phys=usb-0000:00:06.0-1/input0
S: Sysfs=/devices/pci0000:00/0000:00:06.0/usb4/4-1/4-1:1.0/input/input4
U: Uniq=
H: Handlers=kbd event4 
B: EV=120013
B: KEY=e080ffdf01cfffff fffffffffffffffe
B: MSC=10
B: LED=7

I: Bus=0003 Vendor=05a4 Product=9881 Version=0110
N: Name="HID 05a4:9881"
P: Phys=usb-0000:00:06.0-1/input1
S: Sysfs=/devices/pci0000:00/0000:00:06.0/usb4/4-1/4-1:1.1/input/input5
U: Uniq=
H: Handlers=kbd mouse1 event5 
B: EV=17
B: KEY=1f0000 2020000 3878d801d001 1e000000000000 0
B: REL=103
B: MSC=10

...