I need to lock a document (including signatures). Currently, I can set the signature field to lock the page or parts of it, but all signatures can still be cleared and resigned by the signator. How do I stop that? I need it to be final and unchangeable once the final signature is applied.
You can lock the entire document from changes when signing a field, but only if it's the last unsigned signature field in the document. The only change that is allowed is clearing the signature by the person who applied it, assuming no one else has access to your digital id (private key).