GPS, Tracking, etc - call it what you want but the simple fact is that they work for a multitude of reasons and offer many benefits. I had installed on about 60 field service vehicles in 2003. The immediate benefit was a reduction in overtime. The equipment paid for itself in less than a year. The goal was to offer better insight for the three dispatchers and to keep the field techs from crossing paths. The OT issue was a gift. I've been in all aspects of the service end of the business. I can't say with certainty that I would have welcomed GPS but I can tell you that I had many occaisions where I was sent on a call late in the day only to find another tech a block away and heading home. Doesn't make a lot of sense, does it? As a GM, I nor my service manager had the time to compare time cards to the GPS. Sometimes you get a "gut feel" about a tech stroking the company (and the customers) and this is a tool to quantify that feeling. Someone already said it - the guys that complain about it are the ones that are worried about getting caught doing something they shouldn't.