Palm recognition

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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Terrestrial antennas

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 Wide Application Protocol (WAP) makes the wireless access to Internet services as E-Mail and even the World Wide Web via cellular phones convenient. Therefore microwave transmission systems become increasingly important.

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