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Do
staff members have the physical ability to stop visitors
from entering?
By securing all secondary entries, effectively making them
alarmed emergency exits; schools can force all visitors
to use the main entry. Only at this level of secure design
do staff members have adequate natural surveillance over
visitors, assuming windows are properly placed and internal
layout is accommodating. Electronic controls governing
the front door would provide a significant opportunity
for access control. Staff would be empowered to enact a
lockdown with the touch of a button.
At the highest level security an entry vestibule is added,
adjacent to the main office. Natural surveillance is abundant
in most directions.
When visitors enter the entry vestibule,
they physically cannot proceed further until cleared by
the office. In a high security environment, this might
include
electronic screening for weapons. There might be a pass-through
window for suspicious packages as well. Only when staff
are satisfied do they press a release button allowing the
visitor
to enter the facility. Office staff, in this scenario,
are protected behind a bullet-resistant glass.
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