> An electronic signature that records the speed strokes in the signature are made, as well as the final result, is probably a really good way of identifying th

> An electronic signature that records the speed strokes in the signature are made, as well as the final result, is probably a really good way of identifying the purchaser. Not so sure about that. If I use a different mouse then my "signature" using those metrics will fail, as I'm basically a completely different (inept) person using other mice. Just an example, but I don't think that e-signatures can be trusted by using machine learning techniques, at least not any that I know of today.