In palm recognition a 3-dimensional image of the hand is collected and compared to the stored sample. Palm recognition devices are cumbersome artefacts (unlike fingerprint and iris recognition devices) but can absorb perform a great amount of identification acts in a short time. They are therefore preferably installed in situations where a large number of people is identified, as in airports.
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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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150
A
The Roman smoke signals network consisted of towers within a visible range of each other and had a total length of about 4500 kilometers. It was used for military signaling.
For a similar telegraph network in ancient Greece see
About 750
In Japan block printing is used for the first time.
868
In China the world's first dated book, the Diamond Sutra, is printed.
1041-1048
In China moveable types made from clay are invented.
1088
The first of the great medieval universities was established in Bologna. At the beginning universities predominantly offered a kind of do-it-yourself publishing service.
Books still had to be copied by hand and were so rare that a copy of a widely desired book qualified for being invited to a university. Holding a lecture equaled to reading a book aloud, like a priest read from the Bible during services. Attending a lecture equaled to copy a lecture word by word, so that you had your own copy of a book, thus enabling you to hold a lecture, too.
For further details see History of the Idea of a University,
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ZNet provides forum facilities for online discussion and chatting on various topics ranging from culture and ecology to international relations and economics. ZNet also publishes daily commentaries and maintains a Web-zine, which addresses current news and events as well as many other topics, trying to be provocative, informative and inspiring to its readers.
Strategies and Policies
Daily Commentaries: Znet's commentaries address current news and events, cultural happenings, and organizing efforts, providing context, critique, vision, and analysis, but also references to or reviews of broader ideas, new books, activism, the Internet, and other topics that strike the diverse participating authors as worthy of attention.
Forum System: Znet provides a private (and soon also a public) forum system. The fora are among others concerned with topics such as: activism, cultural, community/race/religion/ethnicity, ecology, economics/class, gender/kinship/sexuality, government/polity, international relations, ParEcon, vision/strategy and popular culture. Each forum has a set of threaded discussions, also the fora hosted by commentary writers like Chomsky, Ehrenreich, Cagan, Peters and Wise.
ZNet Daily WebZine: ZNet Daily WebZine offers commentaries in web format.
Z Education Online (planned): The Z Education Online site will provide instructionals and courses of diverse types as well as other university-like, education-aimed features.
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Microwave transmission systems based on terrestrial antennas are similar to satellite transmission system. Providing reliable high-speed access, they are used for cellular phone networks.
The implementation of the
Framing is the practice of creating a frame or window within a web page where the content of a different web page can be display. Usually when a link is clicked on, the new web page is presented with the reminders of the originating page.
Being itself under the umbrella of the
A server is program, not a computer, as it sometimes said, dedicated to store files, manage printers and network traffic, or process database queries.
Web sites, the nodes of the