What keys Cannot be duplicated?

Are there some keys that Cannot be duplicated?

There are certain keys that cannot be duplicated. They are called Do not duplicate (DND) keys. How much a locksmith may try but those keys are rather invincible. They are safer as no one can duplicate them so the locks they open are also safe.

Can all keys be duplicated?

While it's frustrating for a customer to find out that they have been provided with a "do not duplicate" key, the good news is, all types of keys can be duplicated. The “Do Not Copy” inscription on a key acts as a warning, but it does not actually prevent someone from duplicating the key.

How do you duplicate keys that Cannot be duplicated?

First, if you want to get a restricted key copied, then you need to get permission from the owner before the key can be copied. This permission needs to be given with specific documentation that specifies that you can have copies. Then, you will need to take this permission to the original locksmith.