The first step is to make sure that your document is signed by a trusted source.
In most cases, Adobe will make the signer’s signature public.
For some, this can be quite simple.
For example, in Adobe’s PDFs, if you add a file extension and add a “v” symbol, Adobe automatically sends the file’s file ID as a sign-in identifier to the author.
In some cases, however, the file extension has a different meaning than the file ID.
For instance, in the Microsoft Word PDFs and other Microsoft Office documents, the author’s name will appear in the file name as the file identifier.
If your document contains embedded images, such as in an online document, Adobe might send a unique ID to the user for this purpose.
Once the user has signed the file, Adobe may send an email with the signature, which is typically only readable by the author of the document.
The signature can be displayed on the PDF or uploaded to the Adobe Web site.
To make sure you’re signing the document correctly, open the document, choose the option to create a new signature, and then choose the Sign button.
If you’re using the Adobe PDF app, select the “Sign” option.
If the page appears blank, you can select the button next to the “Submit” button, and Adobe will verify the signature and send you an email containing the file and the file signing key.