Linux uses vendor:device hex codes as in 046d:c03f for my Logitech mouse. Udev uses these to identify devices as well in /lib/udev/rules.d. Here's an example of rule file 50-video.rules which I created to set special mount points for video devices. KERNEL=="video*", SYSFS{vendor}=="0x4444", SYSFS{device}=="0x0016", SYSFS{name}=="ivtv0 encoder MPEG", SYMLINK+="video/pvr150" KERNEL=="video*", SYSFS{vendor}=="0x109e", SYSFS{device}=="0x036e", SYMLINK+="video/bttv" KERNEL=="video*", SYSFS{vendor}=="0x046d", SYSFS{device}=="0x092e", SYMLINK+="video/webcam" Hopefully this will give you some hints on where to look as it relates to Nokia tablets. Note that will identify the device as in vendor and model and isn't like a mac address which identifies a port on the network.