Bursky Locksmith - Fast 24 Hour - Is your master key system secure? A master key system enables you to open several locks with just one key. You can install the system in your home or in a commercial building. However, you must be cautious when installing this system. The master key must be high quality and safe to avoid forgery. Most people require this system for the main entrances. This means anyone with a master can access several rooms in your building. The best way to ensure that your system is secure is to contact professional services such as Bursky Locksmith to install it. You will get a secure system at a reasonable price.