How does this GPS thing work? I know how a gps works ( I have two handheld units and I use them all the time for traveling and I have been "geocashing" a few times). We do not have pass or edd or any other initaled things at our center except the diad. I guess what I want to know is does ups have a coordinate for every address in the country? If you missdel a pkg do they know where it is or do the go out with a gps and find where you stop completed it? If you have a long walk to a stop and you stop complete near the car then walk a hundred feet does it show a misdel.? Has anyone actually seen the report it prints out and what is on it?