monitor for shop window

[Ish]

Hi

I want to have a monitor in the window of my shop displaying a powerpoint presentation for people walking past to see.

The problem I have is that during part of the day the sun shines straight onto the window/monitor so it may make viewing the screen difficult.

What kind of monitors do they use in travel agents etc as they seem to be readable in all conditions?

Thanks

 

[Ish]

It's called a transflective screen for anyone who is interested and I now have one on order!