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Intelligent Trailer Tracking whenever and wherever you need it. Explore the Power of Simple with this iPhone application to view your detention time and dwell time. Use it to find your trailers and to perform instant Yard Checks. The application is quick, easy to use and more importantly, it is free. It is the perfect complement to the larger TGI offering for tracking your trailers. The TGI iPhone application was written with our customers in mind to take advantage of the rich TGI information and features of the iPhone. Visit for more information on Intelligent Trailer Tracking and our solution.