 Provided the access tokens or devices are themselves strictly controlled and secure (making it hard for unauthorized people to obtain or fabricate and use them), and the associated electronic or mechanical locks, doors, walls, barriers etc.are sufficiently strong and complete, unauthorized physical entry to the controlled areas is prevented, protecting the information and other assets within.Likewise, office workers are generally encouraged or required to obey "clear desk" policies, protecting documents and other storage media (including portable IT devices) by tidying them away out of sight, perhaps in locked drawers, filing cabinets, safes or vaults according to the risks.