Bruce Boyes, CEO of Systronix, describes TrackBot, a small robotic device with built-in sensor modules that provide beaconing, obstacle avoidance, spatial awareness, communication, and navigation. Add a SunSPOT device to TrackBot, and the result is a powerful but affordable strategy for large-scale deployments in swarms and collaborative robotic behavior. (See also TrackBot on YouTube.)

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Daniel H. Steinberg runs dimsumthinking.com and is former editor-in-chief of java.net.