What is geo-fencing? Its a virtual geographic boundary defined by GPS technology. This enables software to trigger a response when a child or loved one enters or leaves a particular area. To or from school, on their way to a friends house whatever it may be you can set boundaries for peace of mind.
2G Watch - you can set the geofence up to 10km radius
3G Watch - you can set multiple zones and also choose to receive your alert as they enter or leave the set safe zone. You can therefore link zones to each other.
* It is important to note that if your child goes indoors and the signal reverts to LBS mode then you may receive a alert saying that they have left the safe zone. Please check this on maps first before you start panicking.