There are several different forms of key making that can be done by a professional locksmith. The way that keys are made will depend directly on the type of key that it is. If you have your current key with you, getting keys made is a much simpler process. However, if you do not have access to your keys it is possible to have one duplicated by using the code from the key.
Most newer cars have transponder keys, which means that they have a little chip located inside them that responds to the ignition. These keys are a bit more difficult to duplicate, but as long as you have the VIN for your vehicle a professional locksmith will be able to create a new transponder key for you.
Key making should always be completed by a professional locksmith as this is the best way to ensure that the key is made in the correct manner using the right tools. If you do not choose a licensed professional to have your keys made, you may end up with keys that do not work for your locks, which will no do you any good.
A professional locksmith will know how to correctly cut your keys so that they will work on your doors the first time. The locksmith will make sure that the key is correct before they ever let you walk away.
If you have lost your keys or are simply looking to have an extra set of keys made, make sure that you choose a reliable locksmith to create new keys for you. This is the only way to guarantee that the key making process is done correctly and that you are walking away with keys that actually work in your lock.