Q. What technical fix allowed mobile phone companies to send messages to mobile phones?

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Q. What is a defining feature of SMS text messages?

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Q. Why did SMS experience significant adoption among teenagers?

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Q. What technology enabled pervasive person-to-person video communication?

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Q. What is the primary purpose of video conferences?

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Q. Why are video conferences considered a part of CSCW despite not exclusively using computers?

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Q. What is one advantage of video conferences over telephone conferences?

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Q. What challenges are associated with video conferences involving a group of participants?

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Q. What is the purpose of experimental systems involving video walls in common rooms at different sites?

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Q. What is a challenge associated with camera positioning for video walls?

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Q. How does stereo audio contribute to video communication in such systems?

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Q. What is the "video tunnel" technique used for in video communication?

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Q. What is a limitation of the video tunnel technique for eye contact?

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Q. What is the term used to refer to the representation of a participant in a virtual space?

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Q. How do virtual collaborative environments attempt to mimic real-world interactions?

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Q. What challenge is associated with representing non-3D computer-based artifacts in a virtual environment?

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Q. What term is commonly used to refer to a user's representation or character in a virtual world on the web?

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Q. What are MUDs in the context of virtual collaborative environments?

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Q. In which type of activities is the generation and recording of ideas and decisions the primary focus?

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Q. What is the main reason for recording design decisions in a design rationale?

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