The only biometric technology which does not measure the visual features of the human body. In voice recognition the sound vibrations of a person is measured and compared to an existing sample. The person to be identified is usually required to pronounce a designated password or phrase which facilitates the verification process. Voice recognition can be used on the phone, but has the weakness of technology is its susceptibility to interference by background noise.
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TCP and IP are the two most important protocols and communication standards. TCP provides reliable message-transmission service; IP is the key protocol for specifying how packets are routed around the Internet.
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