Which non-verbal communication technique is effective for security guards?

Body language is a critical non-verbal communication technique that security guards can effectively use in various situations. Non-verbal cues, such as posture, facial expressions, eye contact, and gestures, can convey confidence, authority, and attentiveness. For security personnel, being able to project a calm and assertive presence through body language can help de-escalate potentially volatile situations and signal readiness to handle incidents.

Additionally, observing the body language of others can provide security guards with valuable information about individuals' emotional states, intentions, or possible threats. For instance, recognizing signs of anxiety, aggression, or discomfort in a person can prompt a security guard to intervene proactively, ensuring a safer environment.

In contrast, the other options involve verbal or written communication that does not utilize body language. Written warnings, phone calls, and formal reporting typically require a level of discussion or documentation that may not be as immediate or impactful as non-verbal signals in a dynamic situation. Therefore, focusing on body language allows security guards to enhance their situational awareness and improve interactions with the public and colleagues.