Virtual patrolling
Virtual patrolling is a scheduled patrol round conducted through a site's cameras rather than on foot: each camera is a stop, each stop has a checklist, and a failed check notifies the assigned guard and is recorded in a report for the round. It replaces the routine walk, not the response.
A round is defined once as an ordered sequence of cameras with a list of conditions at each: is the gate closed, is the yard clear, is the shutter down. It then runs manually by an operator or automatically on a schedule set by frequency, hours and days in the site's own timezone.
Every item is marked compliant or not, with the frame it was judged on. A failing item captures a snapshot and messages the guard designated for that camera; it stays pending until it is fixed, which captures the after frame, or is held with a written reason. The report per round carries all of it and a compliance percentage.
An automated round also records, for every camera, a description of the scene, the people and objects present and any safety or security risk it sees, whether or not the checklist asked. That is what makes the report a record rather than a log.