The problem of not being able to read the TomTom screen in bright daylight is well known, and a frustrating common factor with modern mobile phones and I-pads. The old black and white screens are much better because they rely on reflected light for readability; my old Nokia phone was easy to see in sunlight, and the monochrome Amazon e-readers work well. I overcame the problem in my van by mounting the TomTom at the top of the windscreen, but that's not possible in the car. it occurred to me that a visor/sunshade around the screen might be helpful, so I have experimented with bits of card, rather like the peak of a baseball cap, and it does help. Has anyone ever addressed this problem? Is there a commercial product available, or even a home-made solution?