sign pdf remotely

https://page-wiki.win/index.php/Why_Code_Signing_with_YubiKey_Raises_the_Bar_for_Software_Security

I had to sign a lease while I was traveling, so I used a tool that let me draw my signature on my phone and drop it onto the PDF in the right spot. It sends an email with a link, the other person signs too, and everyone gets a final copy with an audit trail. No printing or scanning needed, which saved me a trip to a copy shop.