White's MATRIX 100 Instruction Manual page 17

Scanning a Person
top of the head down to the back of the neck.
• When the detector identifies a suspicious item and there is no visible
source for the alarm (clothing is shielding the source object), ask the person to
show you what they have in that area. For example, for an alarm along the arm
or wrist, have the scannee pull up his or her shirt sleeve. Using your detector,
duplicate the squeal you heard before, but now over the visible item.
• Do not let the scannee influence you as to what is actually causing an
alarm. For instance, if the detector denotes the presence of a suspicious item
under a shirt sleeve, do not fail to completely investigate the source of the
alarm even though the scannee assures you that it is just his or her watch.
• If the person you are about to scan caused an alarm when walking through
a portal metal detector, and your job is to try to locate the source of that alarm
on his or her body, do not stop the complete scanning process just because you
come across one alarm-causing item. Continue the scan even though you find
one or more items in the process.
• The lower abdominal area is particularly difficult to scan because this area
is private in nature and because of the metal items usually found in this area:
belt buckles, metal buttons or snaps, and metal zippers. When doing the initial
front body scan, if an alarm occurs in this area, there are two possible ways to
further investigate:
a. Ask the scannee to undo any belt he or she might have on and have him
or her pull the belt ends away from the middle of the body. Now scan the zipper
area; your handheld metal detector should tell you if it is now only sensing a
zipper and/or a metal snap, or if a more suspicious item is present and further
investigation is needed.
b. A second approach that some schools use is that, if the lower abdominal
area is causing an alarm on the handheld detector, ask the scannee to bend
the front of his or her front waistband forward, to ascertain that no weapon
is hidden behind it. Facilities need to be available for situations where
further investigation can be accomplished privately, but only in the presence
of two or more school employees who are the same gender as the scannee
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