geofence somethingto draw a virtual line around a physical area so that a signal can be sent to a mobile electronic device such as a phone inside this line or when this line is crossed
a virtual line that you draw around a physical area so that a signal can be sent to a mobile electronic device such as a phone inside this line or when this line is crossed
You can even set up a geofence around a truck and receive an alert if your truck leaves the area.你甚至可以在卡车周围设置地理围栏，这样一旦卡车离开该区域，你就会收到警报。