Thanks, I will get him to download this and give it a try next week. Could just put a period in a corner and this would be unobtrusive.The "If Found Lock Screen" app is meant to be used to add some text over your lock screen picture, e.g., "If found email xyz @ gmail.com"
I used it for that purpose and found that when it finished it saved a copy of the picture with text to the Camera Roll. I'm pretty sure it allows you to start with your current lock screen picture but not sure if you can trick it into saving the picture without any text. If not, you may be able to add a single character of text near the top or bottom and edit it out later. Worst case you'd be out 99¢. Here is a link to the app: https://itunes.apple.com/us/app/if-found-lock-screen/id398340788?mt=8
The real issue is, people need to learn how to back stuff up. I don't know how many times I've heard of people who have literally years worth of snaps on a camera's memory card that they never transfer anywhere else. Somewhere along the line with the advent of digital, and photos becoming too easy to take and store, we've forgotten the value of them. Back them up, print them, look at them now and again, otherwise what's the point?Ugh.
This is why we need better photo management, people lose valueable photos all the time.
Imagine hundreds of millions of children whose childhood is being stored on devices people don't know how to properly backup. By the time these kids are adults, most of the valueable stuff will be gone.