Wisberg and Daughter - Locksmith Jersey City - Master Key Systems Our Techs Install Master Key Systems A master key system allows you to have one key that lets you into various locks throughout your home or a large work facility. This can cut down drastically on the amount of keys you carry, and it can therefore help you increase efficiency when traveling through a structure. One key rather than a ring of 10 can really help you get to where you need to go. Give Wisberg and Daughter - Locksmith Jersey City a call; we install master key systems. Let us help you get organized and save yourself some time and effort. Lighten your key ring and improve your ability to unlock the door faster.