SOURCE: Patrick Thibodeau, Computer World

Chicago this week began deploying sensors on light poles to monitor, photograph and listen to the city. The effort is costing as much as $7 million, and may be the largest urban data collection of its kind once all 500 nodes are in place.

The beehive-shaped nodes have an array of sensors with enough onboard computing capability to conduct data processing on the device and minimize the amount of bandwidth needed to transmit data.