Localizer (fictional device)
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A localizer is a fictional device in the works of Vernor Vinge, such as A Deepness in the Sky. These are tiny devices, powered by microwave pulses, which can contain a simple processor, sensors, and short-range communications. Vinge explores how wireless mesh networking of these simple devices in a mobile ad-hoc network can be put to use in ways quite different from traditional computer networks. See smartdust for a similar idea.

