CrowdScan, a spin-off from imec and the University of Antwerp, has developed a system that measures the density of a crowd in real-time using a wireless sensor network.    Based on six years of research at the University of Antwerp and imec, CrowdScan has developed a system to measure crowd densities without using camera images, mobile phone data, or other privacy-sensitive information. By transmitting low-energetic radio waves (868 MHz), CrowdScan measures the average signal attenuation of ...