October 9, 2014 -- Updated 0212 GMT (1012 HKT) Tuesday marked the last day of the Hajj, the annual pilgrimage that draws over two million Muslim pilgrims from around the world. Handling a crowd of that magnitude hasn't always been easy, especially in light of public health scares and terrorism threats. To accomplish such a feat goes off without a hitch, Saudi has had to go high-tech. Saudi officials have long employed live crowd analytics software CrowdVision to manage the throng with real-time data. While various health crises -- namely MERS and Ebola -- have cast a shadow over this year's proceedings, organizers employed a medical army to address any health issues that might arise....
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