Ben Brooks in his latest journal (membership required and recommended):

“Why are we still doing signatures? It seems really antiquated when you realize you could sign with biometrics [and] I could not tell you if it was my signature or not on most documents because …I am pretty sure I have three signatures now. I have my ‘wet ink’ signature that I can sign with a pen. I have my left-handed fingertip signature than I do on most digital documents when asked. And lastly I have my […]scribble that I have come to do when shit is more annoying than anything else. None of them look remotely the same.”

So true (both points).