Controlled areas are areas or spaces for which organizations provide physical or procedural controls to meet the requirements established for protecting systems and information. Controls to maintain accountability for media during transport include locked containers and cryptography. Cryptographic mechanisms can provide confidentiality and integrity protections depending upon the mechanisms used. Activities associated with transport include the actual transport as well as those activities such as releasing media for transport and ensuring that media enters the appropriate transport processes. For the actual transport, authorized transport and courier personnel may include individuals external to the organization. Maintaining accountability of media during transport includes restricting transport activities to authorized personnel and tracking and obtaining explicit records of transport activities as the media moves through the transportation system to prevent and detect loss, destruction, or tampering.