We are all entitled to our opinions, including me and you
This is 21st century and technology has advanced rapidly in this century. There are better and more fool-proof methods easily available now over centuries old “signatures”. Have you done research on how many signatures get forged? Finger prints are infinitely more difficult to forge, for example and the technology is there to use a simple thumb print to confirm voter identity.
Are there better ways? Sure. And you name some. But I think my point still stands in regarding the use of signatures.