Tip #1 Make your home security system like an onion, not an egg.
Tip #2 Pretend to be a burglar
Tip #3 Consider the area that the lock sits in
Tip #4 As well as locking something, you must also protect the lock and its components
Tip #5 Brace doorframes and put multiple locks on all outside doors
Tip #6 Find alternatives to normal deadbolts in doors that have windows (or windowed frames)
Tip #7 Treat inside garage doors the same as an outside door: multiple locks and bracing.
Full list via nononsenseselfdefense
via crimestoppers-uk
pic via hometips