As far as additional personnel, really, what you'd be dealing with in Canada is people being released on a probation order or recognizance. I think it's the same in the United States; you may use different terminologies. So the probation officers, if they did not have a GPS or a monitoring device, would have no idea other than the word of a witness saying that the accused or the person charged is not in his or her residence. Tell me if I'm correct or not.