If you manage a company with many individual offices inside the main suite, you may want a master key to open all of them; these master keys can even be made for your home's front and back doors, garage and any other entryway door. Note a few commonly asked questions about master keying so you can determine if it's the right choice for you and know what to discuss with a locksmith when you call.

Do locks need to be replaced when a master key is made?

A master key will work for the same type of lock; the most common type is a pin or tumbler system while others, such as keys to your car door or one that requires a code along with a key, may be connected to a computer that controls the lock. Rather than needing to be changed, these locks can usually be rekeyed or reprogrammed to work with a new key, including your master key. If you're worried about cost, having new keys made is usually faster and more affordable than changing the locks themselves.

Can master keys be duplicated?

A master key can be stamped with the phrase 'do not duplicate' and a reputable locksmith will not copy it as there can be legal liabilities for doing so. A locksmith can also create a master key with thick metal and detailed edges that make it difficult for key cutting machines to duplicate. However, for the most protection of your master keys, it's best to simply keep detailed track of where they are and who is using them.

Can master keys for cars only be made by dealerships?

Many dealerships will tell you that they're the only ones who can make a new key of any sort for your car, but if you're looking for a new master key that works several cars of the same model, such as for a family that all drive the same type of car or an office that provides the same type of vehicle to sales staff, typically a good locksmith can create this master key for you. Those keys will usually all work with the same type of computer chip inside and the car's computers will usually be programmed to read that same chip. A master key may not work on different models of cars, but don't hesitate to ask a locksmith what he or she can do for you if you're trying to cut down on the number of keys you keep for all your vehicles.