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The Locust infrared system provides inexpensive messaging and location information without batteries and without its own network. The system is "privacy aware" in that it supplies information to the wearable computer user who can then control how much of this information is shared with others or the installed infrastructure. By combining the abilities of Locusts with an appropriately equipped wearable computer, the user can interact with web-like hyperlinks, graphics, and sounds virtually associated with objects in the physical world. In addition the user can annotate and change these links as desired.
Starner et al. (Fri,) studied this question.
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