Car doors use a latch system connected to a spring. When you close the door, the latch moves up and locks automatically. To open it, you press a button that releases the latch with the spring's help.
Police are reminding people to always lock their car doors after authorities said a man was arrested while trying to break into a vehicle in Camden County.
Furthermore, a smart lock makes it so that you can even lock your door without getting up when you get into bed, only to realize you forgot to lock up. We've all done it, so let's not pretend ...