Uber has for years engaged in a worldwide program to deceive authorities in markets where its low-cost ride-hailing service was being resisted by law enforcement, or in some instances, had been outright banned, including Australia. The program, which involves a tool called Greyball, uses data collected from Uber's app and other techniques to identify and circumvent officials. Uber used these to evade authorities in Australia, China, South Korea and Italy

http://www.smh.com.au/business/world-business/how-uber-used-secret-greyball-tool-to-deceive-authorities-in-australia-20170303-guqm23.html