Which technical solution could directly address concerns about unauthorized access within physical premises?

The choice of motion sensors as a technical solution to address unauthorized access within physical premises is effective because these devices are designed specifically to detect movement in secured areas. When installed in strategic locations, motion sensors can alert security personnel when there is unauthorized movement, thus acting as a deterrent against intrusions. They enhance physical security by providing real-time monitoring and can be integrated with alarm systems to facilitate immediate responses to potential breaches.

Other options, while relevant to security in different contexts, do not specifically address the direct concern of unauthorized physical access. For example, privacy screens enhance data protection in terms of visual security but do not prevent unauthorized individuals from entering a physical space. Locking doors are a fundamental security measure but do not provide the real-time detection and response capabilities that motion sensors offer. Similarly, firewall protections are critical for securing digital information and preventing unauthorized cyber access, but they do not apply to physical premises security. Therefore, motion sensors play a crucial role in directly monitoring and responding to unauthorized access in real time.