Radio reporting, cellular reporting/texting. You can get information from a remote site or even control devices with a simple text message.
In Hawera I was approached by a farmer who was fed up having to travel across the farm to turn off a pump motor, then return to the "working end" to carry out a fix. He would then return to turn the pump to turn it on, return to the working end to find the fix was not right, and then repeat this procedure. Now he can stay at the working end and turn the pump on and off whenever he wants with a simple text message. The time saving is extraordinary.