 Individuals pretending to building maintenance may gain access to otherwise restricted spaces.They might walk right out of the building with a trash bag containing sensitive documents, carrying portable devices or storage media that were left out on desks, or perhaps just having memorized a password on a sticky note stuck to someone's computer screen or called out to a colleague across an open office.Literally shredding paper documents prior to their disposal is a commonplace physical information security control, intended to prevent the information content - if not the media - from falling into the wrong hands.