I've designed a pricelist for a customer as an interactive PDF so that she has the ability to change the prices at any time. She only has Acrobat Reader.
So the PDF has to be editable when I send it to her. She then would like to lock it before she sends it to her customers. I cannot find a way to do this in Reader. I've tried adding a password in Acrobat Pro, but upon opening it in Reader, there is no option to enter a password and the PDF is not editable.
So please can anyone suggest a way that an editable interactive PDF can be locked in Reader after editing it?