I have different concerns. Is this a shopping company you found on our list? I can think of one company that might do this kind of shop, but there is no such shop on their website nationwide.
If you are wandering around in a parking lot looking in vehicle windows and taking pictures you should expect any non-comatose employee to call the cops on you or at least building security. You need a Letter of Authorization including phone numbers that can be called to verify your activities are legitimate, and even in that case you are likely to get run off the premises.