A Canadian start-up backed by one of BlackBerry's founders unveiled a technology on Tuesday for tracking wireless signals that it says can be used for detecting intruders, managing crowds or finding victims of natural disasters. Cognitive Systems Corp said its Amera technology senses motion in physical space by detecting small changes in the wireless signals that invisibly connect smartphones and other devices to broader networks. The closely held company is largely backed by Mike Lazaridis' Quantum Valley Investments fund, which aims to help bring breakthrough technologies to market.



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