Digital rear view mirror in Prius or rear view camera on the window - any experience?

Hello mates,

does anyone here has ever installed a, mostly chinese, digital mirror, like the one used in the actual RAV4. Where you can look into the mirror, even when the complete car is full of stuff?

If yes, i would like to know if someone has installed the cam for the mirror somewhere inside on the rear window. And could show some pics how it looks like


Greetings, Dominik