Biometric technologies

In what follows there is a brief description of the principal biometric technologies, whose respective proponents - producers, research laboratories, think tanks - mostly tend to claim superiority over the others. A frequently used definition of "biometric" is that of a "unique, measurable characteristic or trait of a human being for automatically recognizing or verifying identity" (http://www.icsa.net/services/consortia/cbdc/bg/introduction.shtml); biometrics is the study and application of such measurable characteristics. In IT environments, biometrics are categorised as "security" technologies meant to limit access to information, places and other resources to a specific group of people.

All biometric technologies are made up of the same basic processes:

1. A sample of a biometric is first collected, then transformed into digital information and stored as the "biometric template" of the person in question.

2. At every new identification, a second sample is collected and its identity with the first one is examined.

3. If the two samples are identical, the persons identity is confirmed, i.e. the system knows who the person is.

This means that access to the facility or resource can be granted or denied. It also means that information about the persons behaviour and movements has been collected. The system now knows who passed a certain identification point at which time, at what distance from the previous time, and it can combine these data with others, thereby appropriating an individual's data body.

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Backbone Networks

Backbone networks are central networks usually of very high bandwidth, that is, of very high transmitting capacity, connecting regional networks. The first backbone network was the NSFNet run by the National Science Federation of the United States.

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Immanuel Wallerstein

Immanuel Wallerstein (* 1930) is director of the Fernand Braudel Center for the Study of Economies, Historical Systems, and Civilizations. He is one of the most famous sociologists in the Western World. With his book The Modern World-System: Capitalist Agriculture and the Origins of the European World-Economy in the Sixteenth Century (1976), which led to the expression World-System Theory about centers, peripheries and semi-peripheries in the capitalist world system, he did not only influence a whole generation of scientists, but this theory seems to get popular again, due to globalization.

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