FAQs

How to verify legally the validity of a signed document

How do I verify legally the validity of a document which has been signed using sign pro PDF?

Answer

In the event of a handwritten signature being questioned it is necessary to compare it against a set of samples that are known to be genuine.
This requirement applies equally to ink-on-paper signatures and to electronic handwritten signatures.
A large number of genuine samples should be used because signatures are always variable, and it is important to take this natural inconsistency into account.
The questioned signature can then be scrutinized to detect any features that are inconsistent with the normal signatures.

To the user the signatures embedded in the PDF documents look like nothing more than static images, and the visual appearance alone is inadequate for the purposes of forensic assessment.
However, the full FSS data can be extracted using forensic tools designed for this purpose.
The main application used is Wacom SignatureScope which allows the full depth of biometric and forensic data to be examined and compared.
SignatureScope was designed in cooperation with Forensic Document Examiners and is intended for use in legal proceedings.