Module Seven
You can add security to your Adobe PDF files when you first create them or after the fact. You can even add security to files that you receive from someone else, unless the creator of the document has limited who can change security settings.
Adding Security to a document
You can add two kinds of passwords to protect your PDF documents. You can add a Document Open password so that only users who have the password can open the document, and you can add a permissions password so that only users who have the password can change the permissions for the document.
Signatures
A digital signature, like a conventional handwritten signature, identifies the person signing a document. Unlike a handwritten signature, a digital signature is difficult to forge because it contains encrypted information that is unique to the signer and easily verified.
Clear or remove a digital signature
Do one of the following:-
- To remove a signature, right click the signature field and choose Clear Signature.
- To remove all signatures in a PDF, choose Clear All Signature Fields from the Options menu in the Sinatures panel
You cannot remove a signature unless you are the one who placed it and you have the digital ID for signing it installed.
Note: To delete the signature field in Acrobat, choose Tools > Advanced Editing > Select Object Tool, select the signature field, and press the Delete key.