Another method you might consider implementing would be identity verification via SMS code. I've experienced this with docusign: https://support.docusign.com/s/

Another method you might consider implementing would be identity verification via SMS code. I've experienced this with docusign: https://support.docusign.com/s/document-item?language=en_US&rsc_301=&bundleId=gav1643676262430&topicId=kzp1578456318101.html&_LANG=enus https://support.docusign.com/s/document-item?language=en_US&... It requires you to know the phone number of the signer, but for important stuff you typically do.