Title: Polygonal Broadcast, Secret Maturity and the Firing Sensors Speaker: Shlomi Dolev Place: NE43-308 Time: 1-2:30pm Date: Feb. 14, 2003 Abstract: This work considers communication among sensors that are spread in a geographic region. Each sensor is a computing device with severe resources limitations, low power, slow processing and small memory. The devices are distributed (uniformly) in the geographic region. Broadcast, flooding and sense of direction procedures that fit the special characteristics of the system will be presented. The procedures use imaginary tiling of the plane. The broadcast procedures are used by a sensor for distributing secrets that activate the sensors simultaneously at a particular time without revealing the nature of the upcoming activity. joint work with Ted Herman and Limor Lahiani