inventerius:Wireless fence One way of keeping a girl on the grounds would be placing a huge metal
inventerius: Wireless fence One way of keeping a girl on the grounds would be placing a huge metal fence around the grounds. However this is neither pretty nor practical. This is why the pet industry had come up with wireless dog fences. These are basically systems using a shock collar that is activated when the collar comes to close to a buried antenna (the edge of the fenced in area) or the collar goes to far from a central transmitter. This could be adapted for use on a girl by taking the collar apart and adapting the electrodes for use on a human. It could than be connected to a belt or collar that would lock around here. For example something like this. She will then be free to move around the grounds within the fence and as long as she stays away from the edges she will not be shocked. Devotional Training: Wirelessly. -- source link