Biometric technologies are not surveillance technologies in themselves, but as identification technologies they provide an input into surveillance which can make such as face recognition are combined with camera systems and criminal data banks in order to supervise public places and single out individuals.
Another example is the use of biometrics technologies is in the supervision of probationers, who in this way can carry their special hybrid status between imprisonment and freedom with them, so that they can be tracked down easily.
Unlike biometric applications in access control, where one is aware of the biometric data extraction process, what makes biometrics used in surveillance a particularly critical issue is the fact that biometric samples are extracted routinely, unnoticed by the individuals concerned.
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John W. Hill opened the doors of his first public relations office in 1927 in Cleveland, Ohio. His early clients were banks, steel manufacturers, and other industrial companies in the Midwest. Hill managed the firm until 1962, and remained active in it until shortly before his death in New York City in 1977. In 1952, Hill and Knowlton became the first American public relations consultancy to recognize the business communication implications engendered by formation of the European Economic Community. Hill and Knowlton established a network of affiliates across Europe and by the middle of the decade had become the first American public relations firm to have wholly-owned offices in Europe. Hill and Knowlton, a member of the WPP Group integrated communications services family, has extensive resources and geographic coverage with its 59 offices in 34 countries. Hill and Knowlton is known for its hard-hitting tactics and said to have connections with intelligence services.
Aeneas Tacitus, a Greek military scientist and cryptographer, invented an optical communication system that combines water and beacon telegraphy. Torches indicated the beginnings and the ends of message transmissions while water jars were used to transmit the messages. These jars had a plugged standard-size hole drilled on the bottom side and were filled with water. As those who sent and those who received the message unplugged the jars simultaneously, the water drained out. Because the transmitted messages corresponded to water levels, the sender indicated by torch signal that the appropriate water level has been reached. It is a disadvantage that the possible messages are restricted to a given code, but as this system was mainly used for military purposes, this was offset by the advantage that it was almost impossible for outsiders to understand these messages unless they possessed the codebook.
With communication separated from transportation, the distant became near.
Tacitus' telegraph system was very fast and not excelled until
For further information see Joanne Chang & Anna Soellner, Decoding Device,