A new phone app is meant to stop parents from leaving their kids in hot cars.
It's called The Backseat.
A father in Arizona invented it.
It automatically starts working when a driver gets out of a car and forgets precious cargo in the backseat.
Your phone will notify you continuously and then will start blaring an alarm, even if you have the sound turned off.
The app also has one line of defense that goes beyond apps already on the market: it will send out text messages and emails to three people you select.
Those messages include the GPS location of your car, so the people who receive the messages can take action or call 911.
The app has already been downloaded thousands of times.
It's available to iPhone and Android users for free.