Locking PDF after editing
As I understand there are 2 key security options for Adobe PDFs with editable fields.
- Security option 1 (Document Open Password): The form can be locked (ie. password protected) at the start and a password has to be input to open the PDF at all
For this option, once a password has been inputted and details have been completed, can it become locked and not editable after it is saved? (and not only in Adobe but eg. if you open with Macbook Preview)
- Security option 2 (Filling in form fields and signing existing signature fields): The form can be opened and viewable but a password has to be input to allow anyone to edit/copy/print the PDF
Once person A completes the form of PDF with editable fields, is there any way to prevent Person B who also has the password to re-edit the edited fields?
Thanks for your help.
