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There are a few ways of creating a full proof electric garage door which will either warn you or actually close the door after a period of time.
If you opt for a full specification control panel from Somfy with our electric roller doors then you can programme the door to automatically close after a period of time if the door is left open by mistake. This protocol does require that you have additional infra red safety beams fitted for the best safety possible as the door is going to close without any warning by itself.
Bi Directional radio controls also can give you the ability to tell the position of your door with a remote handset or smart phone app. Is it in the open or closed position?