A handwritten signature refers to a person's unique way of signing their name using their own hand. It is a personal mark or symbol on a document that shows its authenticity and that the person has agreed to it. Full definition
Otherwise, a mere handwritten signature on a piece of paper is quite unsafe. (slaw.ca)
So far as I know, it does not for handwritten signatures. (slaw.ca)
If it is relatively easy to forge handwritten signatures, the fact that it might be just as easy to forge electronic signatures is not a barrier to using the latter. (slaw.ca)