2.9.2-4 Display Suppression for Security

When confidential information is displayed at a workstation that might be viewed by casual onlookers, the user should be provided with some rapid means of temporarily suppressing a current display if its privacy is threatened, and then resuming work later.

Additional Information:
A suppressed display should not be entirely blank, but should contain an appropriate message indicating its current status, e.g., "Display is temporarily suppressed; enter password to resume work." Such a capability is sometimes called a "security pause." For quick display suppression, a function key might be provided. To retrieve a suppressed display and resume work, a user might be required to make a code entry such as a password, in the interests of data protection.