Dimming

[Crocodoc]

Would it be possible to add a hidden spot (the data card slot for example) to dim the screen? I know that you can adjust the backlighting via the setup page, but a hidden 'scroll spot' would be handy. I found that during dusk / dawn the unit is very bright compared to the rest of the panel in the VC.
Or, maybe even better, automatic dimming depending on the light conditions, but I guess this will be hard to accomplish.