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Being French, I doubt that in case you are stopped by the police for a control an electronic copy would be enough because here we are supposed to have the little green-paper square on the windshield at all time, as well as the paper from the insurance in the car at all time also.
Even if you might be perfectly square with insurance and all, might be a good idea to print it somewhere
Driving in france- is an electronic copy of my insurance acceptable?