| Automatic speech recognition (ASR) | a system that not only captures spoken words but also distinguishes word groupings to form sentences.
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| Biometrics | the use of your physical characteristics-such as your fingerprint, the blood vessels in the retina of your eye, the sound of your voice, or perhaps even your breath-to provide identification.
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| CAVE (cave automatic virtual environment) | a special 3-D virtual reality room that can display images of other people and objects located in other CAVEs all over the world.
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| Digital cash (also called electronic cash or e-cash) | an electronic representation of cash.
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| Digital economy | marked by the electronic movement of all types of information, not limited to numbers, words, graphs, and photos but including physiological information such as voice recognition and synthesization, biometrics (your retina scan and breath for example), and 3-D holograms.
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| Feature analysis | the step of ASR in which the system captures your words as you speak into a microphone, eliminates any background noise, and converts the digital signals of your speech into phonemes (syllables).
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| Global positioning system (GPS) | a collection of 24 earthorbiting satellites that continuously transmit radio signals to determine your current longitude, latitude, speed, and direction of movement.
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| Glove | an input device that captures and records the shape and movement of your hand and fingers and the strength of your hand and finger movements.
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| Government-to-business (G2B) | the electronic commerce activities performed between a government and its business partners for such purposes as purchasing direct and indirect materials, soliciting bids for work, and accepting bids for work.
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| Government-to-consumer (G2C) | the electronic commerce activities performed between a government and its citizens or consumers including paying taxes, registering vehicles, and providing information and services.
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| Government-to-government (G2G) | the electric commerce activities limited to a single nation's government focusing on vertical integration (local, city, state, and federal) and horizontal integration (within the various branches and agencies).
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| Financial cybermediaries | Internet-based companies that make it easy for one person to pay another person over the Internet.
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| Headset | a combined input and output device that (1) captures and records the movement of your head, and (2) contains a screen that covers your entire field of vision and displays various views of an environment based on your movements.
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| Holographic device | a device that creates, captures, and/or displays images in true three-dimensional form.
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| Implant chip | a technology-enabled microchip implanted into the human body.
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| International government-to-government (IG2G) | the electronic commerce activities performed between two or more governments, including providing foreign aid.
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| Language processing | the step of ASR in which the system attempts to make sense of what you're saying by comparing the word phonemes generated in step 2 with a language model database.
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| Last-mile bottleneck | problem occurs when information is traveling on the Internet over a very fast line for a certain distance and then comes near your home where it must travel over a slower line.
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| Micro-payment | a technique to facilitate the exchange of small amounts of money for an Internet transaction.
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| Pattern classification | the step of ASR in which the system matches your spoken phonemes to a phoneme sequence stored in an acoustic model database.
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| Push technology | an environment in which businesses and organizations come to you with information, services, and product offerings based on your profile.
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| Three-dimensional (3-D) technology | presentations of information give you the illusion that the object you're viewing is actually in the room with you.
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| Virtual reality | a three-dimensional computer simulation in which you actively and physically participate.
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| Walker | an input device that captures and records the movement of your feet as you walk or turn in different directions.
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| Wearable computer | a fully-equipped computer that you wear as a piece of clothing or attached to a piece of clothing similar to the way you would carry your cell phone on your belt.
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