I am working on a project which requires a PDF form sent over the internet, filled in by user, and then reply (XFDF) sent via email, and imported into the application.
The file contains a digital signature, which the client insists must be signed by the user. However, there is nothing sent back in the form reply with respect to the signature (field is blank).
In addition, it seems non-deterministic whether Adobe Reader 9.x allows the signature to be entered. Sometimes it allows it, most times not. There seems to be no correlation between the contents of the pdf file, and the availability of signing.
My (humble) opinion is that this digital signature is not intended for form reply, and only affects the original document. Although the client is justified in his expectations, this is a case of "You can't get there from here".
The question is, can I get this to work as intended? Failing that, how can I convince the client that this is a futile endeavor?