It depends on the jurisdiction. At least in the US, the ESIGN Act of 2000 made esignature valid and enforceable. I believe there is relevant case law after this

It depends on the jurisdiction. At least in the US, the ESIGN Act of 2000 made esignature valid and enforceable. I believe there is relevant case law after this act that back up the core idea that an esignature is valid. People can always claim they didn't sign something, ink or digital. The reason that DocuSign is a multi billion $$ company is that they have a bunch of audit trail features which make it pretty darn clear the person did in fact sign it.