From Chilah from makeupnotebook.com

Yahoo required an electronic signature … . It’s just a slash before and after an s. You type your name first, and then underneath it you type your name again. They accepted it and the material was removed.

Your Full Name
/s/Your Full Name

Thought I would share that tip. It’s not something that would have occurred to me to do. I’m not exactly sure how that would qualify as a digital signature since anyone can type the characters. There you go.