Here’s a neat idea that will make you wonder why you hadn’t thought of this already. I know that’s what I thought as soon as I saw it.
Even though we have stuff like Find my iPhone and Find my Mac available, what about that honest person who finds your iPad or iPhone on a bus or in a restaurant and wants to return it to you? If you haven’t engraved your contact information onto the iPad (and who does that, really?), and you’ve set a passcode to get past the lock screen, that kind individual will be out of luck in trying to find you to get your iPad or iPhone back to you.
What’s a helpful iOS device owner to do, then, to help a good samaritan return a lost item?