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In order to create low power, low latency and reliable sensing systems, the authors propose a sensing strategy that identifies local events by the means of global measurements. They claim that capturing events globally, although seems against intuition, can save energy by enabling the organization of effective searching queries. To enable this capability, sensor readings can be combined using electronic switches and therefore enable event detections in groups of sensors with single measurements. They demonstrate this sensing mechanism on a prototype keyboard system made from E-Textile pressure sensors.
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