Lock Screen
Noun · Security & Infosec
Definitions
The interface or state that prevents continued use of a device without reauthentication after it is idle, manually locked, or resumed. Lock screens are a basic but important control against opportunistic misuse of unattended devices.
In plain English: The protective screen that blocks use of a device until it is unlocked again.
Example: "The incident happened because the shared workstation had no automatic lock screen timeout on the production floor."