For years, Uber used a secretive software tool known internally as “Greyball” to identify and steer its drivers clear of potential threats ― including law enforcement officers hoping to catch Uber operating in their cities illegally. This includes the rider’s behavior using the app itself, such as the phone type, and patterns in the frequency of its use. Another clear tell: interacting with the app in close proximity to police stations and other government buildings. In 2014, for instance, officials in Portland, Oregon, sued Uber for operating in the city illegally, and promised to hit every driver caught working for the service with a fine of up to $3,750. The threat accomplished little, as Uber continued operating anyway.
Source: Huffington Post March 04, 2017 01:18 UTC