Digital Signatures can be used to verify a document’s origin and to make sure it hasn’t been tampered with after signing.
As a developer, you can add additional metadata — like a timestamp or an IP address — to a digital signature for even better security.
A digital signature on a PDF document is reliable proof of the document’s origin.
An encrypted hash is used to verify that the document hasn’t been tampered with.
PSPDFKit supports both hand-drawn signatures and encrypted, digital certificate-based signatures.