Wet signatures are also a thing to avoid updating ancient procedures. I looked into the legal requirements for needing a wet signature (in my jurisdiction) and it turns out that they are rarely required. You need one when buying a house, but you need them for very little else.

I told the credit card company that demanded that I mail them letter with a wet signature to just accept a scanned PDF or lose my business and after a few emails back and forth they simply relented (admittedly, this was a few years ago).