ok, thanks for that information.
I just received my car today, and I was told at the dealership that Aviva seem to accept screenshots for the geolocalisation enabled in the phoneapp as well as the antitheft. This along with a screenshot of the current location of the car, as a proof of it working.
She said that most clients that she's dealt with in Montreal have been able to do this.
I will try this in the next few days, and update this post.