ABSTRACT
Technical surveillance is most often carried out through use of closed-circuit television cameras. There are two basic types of surveillance: Physical surveillance: The actual observation of other persons, activities, or places, by the human eye and the proper recording of this information, and Technical surveillance: The employment of technical equipment such as cameras, radios and electronic monitoring equipment, for the purpose of preserving observations made during the surveillance. Libraries and other institutions have a legal right to place a surveillance on their employees or to “tail” trucks or other library vehicles driven by library employees. The more exotic types of surveillance are not something in which libraries and museums would, as a rule, be interested. A form of surveillance that may once have been legal is in violation of the law. Any sort of photographic surveillance requires the use of special equipment by highly trained professionals.
