I ran a camera thing too and voluntary parting was the big problem. Standard CoI covered theft from the renter and damage, but not the renter being the thief. Does your solution cover that?
Some of our customers are vehicle sharing companies that run into similar kind of risks. We're bringing the best practices of the industry to manage this though our platform: for each rental, we empower you to make real time decisions based on your internal + external information so you can keep your risk under control. Feel free to ping us on https://www.tint.ai for more info.