The short answer
A retail store may need guards, cameras, or both depending on its losses, customer traffic, layout, hours, parking exposure, and history of safety incidents. Cameras are valuable for broad observation, recorded evidence, remote review, and coverage of areas that cannot be watched continuously. Their limits are response and judgment: a camera cannot assist a threatened employee, direct an evacuation, verify a person’s explanation, or manage a live disturbance.
What to know
A security officer adds visible deterrence and a trained human response under written post orders. Officers can patrol entrances and parking areas, observe conditions, communicate with management, document incidents, and call emergency services when required. However, one officer also has limited sight lines, and security personnel should not replace sound inventory controls or a properly designed video system.
Start with incident and loss data. Identify where events occur, when they occur, and what action would have changed the outcome. A layered plan may place cameras at entrances, registers, stock areas, and parking approaches while assigning the officer to higher-risk times and locations. Confirm privacy, retention, and access rules for recordings, and define exactly how camera observations are communicated to the officer.