HHMD should be kept at what distance away from the passengers ?

The Hand Held Metal Detector (HHMD) is a standard security tool used for screening individuals to detect concealed metallic objects. According to the guidelines and Standard Operating Procedures (SOPs) established by the Bureau of Civil Aviation Security (BCAS) in India, the HHMD should be maintained at a distance of 2.5 cm (approximately 1 inch) from the passenger's body during the screening process.

• Sensitivity: This distance is considered optimal for the device's electromagnetic field to detect small metal objects effectively without the need for physical contact.
• Non-Intrusive Screening: Maintaining a 2.5 cm gap ensures that the screening remains non-intrusive, respecting the passenger's privacy and maintaining hygiene standards.
• Procedure: Security personnel (such as CISF in Indian airports) are trained to move the wand systematically over the body at this specific distance to ensure thoroughness.