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I thought it would be interesting to solve this problem with a wireless sensor network because each node can be made to be fairly low-cost, low-resolution, and high efficacy. Having a simple light and sound sensor that's network-enabled allows for a fair bit of useful data collection.

The light and sound data is interpreted as follows:

Lights on, loud room: social

Lights on, quiet room: study

Lights off, quiet room: empty

Lights off, loud room: creepy.

The collated data is displayed with text and color clues to increase speed of reading. Below are some screenshots of one sample room's status as displayed based on the sensor data.

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