it was used when i had an accident in Jan, in the middle of the wolds, it got the ambulance to within a metre.
The crew said it should just be a standard app on a device.
As a business we now use it in our RAMS.
It cannot be used on a stand alone sat nav but it can if you use your phone/device as a sat nav
i would imagine the technology will be licensed to one of the sat nav manufactures soon