The fact that an individual's identity is expressed not only by the way he/she looks or sounds, but also by the manner of walking is a relatively new discovery of in biometrics.
Unlike the more fully developed biometric technologies whose scrutiny is directed at stationary parts of the body, gait recognition has the added difficulty of having to sample and identify movement. Scientists at the University of Southampton, UK (
Another model considers the shape and length of legs as well as the velocity of joint movements. The objective is to combine both models into one, which would make gait recognition a fully applicable biometric technology.
Given that gait recognition is applied to "moving preambulatory subjects" it is a particularly interesting technology for surveillance. People can no longer hide their identity by covering themselves or moving. Female shop lifters who pretend pregnancy will be detected because they walk differently than those who are really pregnant. Potential wrongdoers might resort walking techniques as developed in Monty Pythons legendary "Ministry of Silly Walks" (
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The Romans can be called the great inventors of myths with the purpose of propaganda. Think of
Or Augustus: he reunited the Roman Empire; part of his power was due to huge efforts in propaganda, visible e.g. in the mass of coins showing his face, being sent all over the empire. He understood very well, that different cultures used different symbols - and he used them for his propaganda.
Politically the Roman army was an important factor. Propaganda in that case was used for the soldiers on the one hand, but on the other hand also for demonstrating the power of the army to the people, so they could trust in its strength. Even then security was an essential factor of politics. As long as the army functioned, the Roman Empire did as well (
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A transistor is a solid-state device for amplifying, controlling, and generating electrical signals. Transistors are used in a wide array of electronic equipment, ranging from pocket
The U.S. Data Encryption Standard (= DES) is the most widely used encryption algorithm, especially used for protection of financial transactions. It was developed by IBM in 1971. It is a symmetric-key cryptosystem. The DES algorithm uses a 56-bit encryption key, meaning that there are 72,057,594,037,927,936 possible keys.
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