A garage door doesn't just allow you access to the garage, in many cases, it allows access to your home. For your security, you should know how to secure the garage door. Securing the garage door is about securing access not just to the items in your garage, but to your entire home.
#1 Leaving for a Trip? Disable the Opener on Your Garage Door
When you go on vacation for more than a few days, leave the garage secure.