Latest Answer: Geo-fencing notifies you when an electronically tracked asset in motion crosses its virtual boundary. The notification will be sent to a cell phone or email. It usually includes location, time and date that the virtual boundary was crossed, allowing for an immediate response to the situation. Once the technology is fixed for manholes as per the rise in sewage level alerts will be sent to a cell phone and a scree will be set up at all pumping stations to be monitored.