I'd rather have a smiley face drawn on then them trying to fit a 25 letter first name and saying they can't fit their last name on the screen. Or, I messed up can you erase it so I can start over.
I find the job goes sooooo much better when you let the little stuff go. Just remind yourself that chances are, you are making way more dough than the signer.
This one effeminate receiving clerk at a Walmart used to draw pictures on the signature screen and try to flirt with me. It was like delivering to Inde. I'm not homophobic but it was really awkward...