] Tiny remote sensors could reshape research
]
] The concept is called ``smart dust,'' although the
] instruments are still far bigger than dust motes. More
] formally, it's known as a wireless sensor network.
] ...
] Researchers at UCLA's Center for Embedded Networked Sensing
] want to add another layer to the system: small robots that
] would crawl along cables among the wireless sensors in a
] network. They could move in as needed to take more data,
] snap photos or do chemical analysis.

A network of tiny wireless sensors that move. This adds an entirely new connotation to "bugging a room".