Could I ask about the user testing you did on this? Intuitively, if I lost something valuable, I would feel that people would be more inclined to make an effort in returning it if they saw a name (and hence a person) attached to it. Emotionally, that seems to be more powerful of a draw than a code. I guess in my case, I would think the additional vulnerability from having my name and e-mail address on it would not ou…
I think having a name sounds like a good idea that could be quite hard to do in the wild without making the stickers larger. Take for example my name (Nicholas Smith), which isn't overly long, but it'd take up a bigger chunk of sticker space unless we truncate it to Nick Smith. Which is still reasonably big, so you have to either increase the sticker size or truncate further until it's N.Smith and it loses the persona attached with a name.