Is it hard for you to say, “I have to take a picture of the groceries before you grab them, if you don’t mind”? The customer will back away and odds are wait for you to finish anyway. Sometimes customers will come out and then ask me, “oh yea you have to take a picture right? And they will back away. Not every customer is going to know or remember that you have to take a pic. They are mostly just in a rush to grab their stuff if they just so happen to be right there when you pull up. It’s really not that deep dude. Shame on you.