Systems and methods enforce an expiration date for an electronic document
and represent the expiration visually. The author may specify an
expiration date for an electronic document. The expiration date may be
either a date stamp or an integer representing a period of time from the
creation date. The access to the document may be unavailable to a user
after the expiration date. The visual representation of the document may
age after a milestone date is reached. Random pixels may be added to the
visual representation until the document expires. An algorithm may apply
visual metaphor bitmaps to the document's visual representation. The
bitmaps may be templates. The document may be mapped to the applied
bitmaps. The document may be rendered illegible after the expiration date
is reached.