Someone has used a permanent marker on my CommBox?

Either power down or go to the quick menu (hold down on android with 2 fingers). Select the spanner icon and then from this menu select the hands icon. 

The touch will be disabled for a few seconds allowing you to wipe over the screen.

For the best clean, please use a microfiber cloth with an alcohol-based cleaner, we recommend Isocol www.isocol.com.au. 

Try to be more gentle on our Display Panels as they don't have hardened glass like the Classic & Pulse range.