"Naturally, powerful people tend to gravitate toward other powerful people, " explains clinical psychologist and celebrity researcher Jim Houran, for reasons that range from proximity (stars hang around other stars) to familiarity (people are attracted, at least initially, to others like them) to clearer expectations (shared priorities make it easier for celebrities to relate).

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There are also optional breakout and Bluetooth boards to connect sensors like range finders, IR proximity sensors, photo detectors and thermostats.

ENGADGET

The range of the active proximity dashboard is customizable.

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The upgraded Lockitron senses the person's proximity to the door and unlocks it once you are in range.

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