In Indoor Location Technology Opens New Worlds, Kris Kolodziej makes an introducation to indoor positioning technologies.

Indoor positioning technologies relate people, objects and events in space. Building a positioning system that works weel indoors is a challenge, because signals reflected of walls, floors and cellings tend to confuse sensors, and often there are obstructions between sensors and objects being tracked. Several positioning methods can be used alone or combined:

• Triangulation
• Scene analysis
• Proximity

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