The vendor can now track both flip phones and smartphones with or without GPS. The service acquires permission through interactive voice response, and can be used with any type of cellphone. A broker supplies FourKites with a driver's phone number for a specific load, which launches an automated call to that phone. The driver grants permission to track by saying "yes," or by pressing the number 1 from the dial pad. Because app-less cellphone tracking locates phones by cell-tower triangulation, it can track phones not equipped with GPS. The CarrierLink app installed on a driver's smartphone continues to work with the phone's GPS, and will remain free for brokers, FourKites said. Real-time location information is fed into the platform to predict estimated times of arrival, provide delay alerts, and specify arrival and departure times at stops, using circular and polygon geo-fences.
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