FRANKLIN, Tenn. (AP) - A Franklin father of three has created a smartphone app that reminds parents not to leave their children in a hot car.

Cody King says he has been haunted by the thought of accidentally leaving a child in a car, even though it's never happened to him or any one he knows.

The Tennessean reports the app uses an algorithm that tracks a user's movements coordinating between Wi-Fi, GPS and cell towers. When a driver stops for three minutes or longer, the app sends out an automatic alert asking "Did you remember the kids?"\

The app created by King and his team of designers is called "Remember the Kids."

He says he wants parents to use as many tools or reminders as necessary.