Signing a PDF document using a predefined signature field

You can also digitally sign a PDF document by using a signature form field that’s already been added to it. To sign a document in a predefined signature form field, you follow these steps:

1. Open your Digital ID file by choosing Advanced➪Manage Digital IDs➪My Digital ID Files➪Select My Digital ID File. The Select My Digital ID File dialog box opens.
2. Select the filename of your user Digital ID in the Digital ID File dropdown list, enter your password in User Password text box, and click the OK button.
3. If the Signatures palette isn’t open and selected in the Navigation pane, choose View➪Navigation Tabs➪Signatures.
4. Click the name of the signature field you want to sign in the Signatures palette to highlight it, and then select Sign Signature Field on the Signatures palette Options pop-up menu to open the Apply Signature to Document dialog box.
5. Enter your user Digital ID password in the Confirm Password text box if necessary, and then modify the settings in the other options (Reason for Signing, Location, Your Contact Information, and Signature Appearance) as desired. Refer to Steps 5 through 10 in preceding post, “Adding a visible or invisible signature to a PDF document,” for details.
6. Click the Sign and Save button to save your changes and signature in the selected signature field in its current location with the same filename.

Alternatively, click the Sign and Save As button to open the Save As dialog box, where you can modify the file’s location and/or save it under a new filename.
As with the other methods of digitally signing a PDF document, after Acrobat finishes saving the signed document, the program displays an alert dialog box, informing that you have successfully signed it. As soon as you click the OK button to close the alert dialog box, you can see your signature in the signature form field. Figure shows you a PDF document after I signed a signature form field beneath the book title and byline.