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Surveillance - An Overview

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Cell phones are also generally employed to gather site details. The geographical location of the cellphone (and therefore the individual carrying it) is often identified conveniently regardless if the phone is not getting used, using a way often called multilateration to work out the differences in time for a sign https://productfoto43097.ouyawiki.com/685936/die_bedeutung_der_sicherheit_bei_der_alarmverfolgung

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