How valuable would it be to know the successes and challenges other agencies faced in using global positioning systems (GPS) before deciding what would work for yours? Global Positioning System (GPS) Technology for Community Supervision: Lessons Learned affords you such an opportunity. Whether the use of this technology is mandated by legislation, to relieve facility overcrowding, a component of intensive supervision, or for victim protection - this document provides valuable insights concerning GPS hardware components, vendor selection, geographic and environmental factors, and alternative supervision program tools/treatments that will keep agencies from having to "re-invent the wheel."