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

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

1 cm
2.5 cm
5 cm
10 cm
This question was previously asked in
UPSC CISF-AC-EXE – 2021
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Proper technique for using a Hand Held Metal Detector (HHMD) involves scanning the person’s body systematically while holding the device close to the surface without necessarily touching it. Standard security guidelines often recommend holding the HHMD at a distance of approximately 2.5 cm (about 1 inch) from the person being screened. This distance allows the detector to effectively pick up metallic objects while avoiding unnecessary physical contact.
Maintaining a small, consistent distance is crucial for effective HHMD scanning.
The specific distance might vary slightly depending on the HHMD model and training guidelines, but a close proximity like 2.5 cm or 1 inch is a widely accepted standard to ensure thorough detection of concealed metallic items.

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