What security feature is designed to enhance protection against tampering?

The feature designed to enhance protection against tampering is known as "reeds resist." This type of security measure utilizes reed switches, which are highly effective in detecting unauthorized access. When a magnetic field is applied to a reed switch, it either opens or closes, triggering an alarm if tampering is detected. This makes them particularly useful in securing doors and windows, as any attempt to move or manipulate these points of entry will immediately alert the system.

In contrast, active sensors, buried cables, and photo beams serve different purposes in a security system. Active sensors typically detect the presence of an intruder through motion or environmental changes, rather than directly addressing tampering. Buried cables are used for perimeter security; however, their vulnerability to cutting or damage may not provide the same immediate alert as a reed switch. Photo beams, while useful for creating invisible barriers that trigger alarms when crossed, also do not specifically address tampering. Thus, reeds resist stands out as the most effective feature for improving tampering protection.