Stop what you are doing. Walk over to your front or back door. Open it. Look down at the doorjamb where the holes are—you know, where your doorknob and deadbolt locks (hopefully they are Schlage) go into the frame. Those 3/4-inch-ish holes are surrounded by what’s called a strike plate. The strike plate has two screws in it, and if you were to remove them they’d probably be smaller than 3/4-inch ones.
http://robertsiciliano.com/blog/2013/11/15/standard-door-frames-make-burglary-easy/