In the agonizing final seconds of the call, Anderson’s words are muffled by the sounds of pond water. The dispatcher asks for the address again, then utters, “I lost her.”

It took 20 minutes for rescuers to get to Anderson and pull the 31-year old suburban Atlanta woman from her car, just barely alive. She died a week and a half later in the hospital. Her 911 call is one of millions that fail to give police, fire and ambulance dispatchers a quick fix on location, a technology shortfall that can leave callers like Anderson in grave danger.

In an era when your mobile phone can tell Facebook, Uber or even video games where you’re located – with amazing accuracy – 911 operators are often left in the dark.