Abstract

The Locust infared system provides location information and messaging 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. 1 The Need for an Indoor Location System The U.S. military's satellite-based Global Positioning System (GPS) can provide meter precision position information anywhere on the planet. Unfortunately, the radio frequencies used prevent the system from being effective indoors. However, many applications need indoor position information. For example, an indoor paging system might use position information t...

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