A dashboard icon showing which seat belts in the car are done.
The idea is to have a spot in the dash which shows all the possible belts in the entire car. Each time a buckle is done up the light will come on to show this to the driver so that they are not having to turn around to check. As soon as the seatbelt becomes undone the light will go off alerting the driver.
Problem this idea/invention addresses:
It is quiet dangerous for parents to be attending to their children in the back seats while driving. Having tow children myself, I know it is easy for a four year old to unbuckle his seatbelt without me knowing until we are getting out of the car.