If you have a garage at your home then you may well use it to store either your car or expensive tools and equipment such as bikes, lawn mowers and power tools. It is important to ensure that your garage is safe and secure and if it is away from your home, that you can easily be alerted if someone does try to break in.
Firstly you need to check that every access point to the garage is secure, even if you have a door that can only be accessed whilst within your premises, you need to be sure that it has a good quality locking system
The type of door you chose for your garage is of massive importance. Yes, you want the garage door to be practical such as an automatic up and over but you also need to make sure that it is not easy for unwanted visitors to gain access.
You should have a security light fitted above every entrance and also CCTV if possible. This may help in court or to assist the police if you do get broken in to and can also act as a deterrent.