Adobe ACROBAT READER 7.0 Manual page 131

Using digital identity stamps
If commenting is enabled in a PDF document, you can use digital identity stamps to
approve the document. Digital identity stamps contain information that you provide in the
Identity preferences, such as your name, title, organization, and email address. When you
open a PDF document in an approval workflow, Adobe Reader presents several digital
identity stamps from which to choose. When selected, a digital identity stamp prompts
you to provide your identity information. (See
Digital identity stamps can be used in place of signatures, but are different from digital
signatures or digital IDs. (See
Related Subtopics:
Adding identity information to a stamp
Creating custom stamps
Deleting custom stamps
Adding identity information to a
About signing PDF documents.)
stamp.)