29. The method of claim 26 , further comprising: encrypting the annotation with a first encoding based upon a first user associated with the annotation; acquiring a second annotation from the image of the document; and encrypting the second annotation with a second, different encoding based upon a second user associated with the second annotation.
29. The method of claim 26 , further comprising: encrypting the annotation with a first encoding based upon a first user associated with the annotation; acquiring a second annotation from the image of the document; and encrypting the second annotation with a second, different encoding based upon a second user associated with the second annotation. 30. The method of claim 29 , further comprising: determining a number of annotations made in each portion of the document based upon at least the annotation and the second annotation; displaying the document; and identifying the number of annotations made to each portion of the document using color in the displayed document.