What Is Key Duplication?
What Is Key Duplication?
Key duplication is the process of creating an exact copy of an existing key. Whether it's a house key, car key, office key, or padlock key, the goal is to replicate the shape and grooves of the original key so that the duplicate operates the same lock without any issues.
This service is offered by locksmiths, hardware stores, and even some automated kiosks, but for the highest level of accuracy, security, and quality, working with a professional locksmith is always the best option.
Why Would You Need a Duplicate Key?
There are many practical reasons people get their keys duplicated. Here are some of the most common:
- Backup in case of loss
- Losing your only copy of a key can be a nightmare. Having a spare saves you from being locked out and paying for emergency lock replacement services.
- Convenience for family or roommates
- Instead of constantly passing one key around, you can provide each household member with their own.
- Office or employee access
- Businesses often duplicate keys to allow trusted employees entry to specific areas.
- For emergencies
- You can leave a copy with a neighbor, friend, or family member you trust for emergency situations.
The Key Duplication Process with a Locksmith
Here’s a step-by-step look at how a professional locksmith duplicates a key:
1. Identify the Key Type
First, the locksmith examines your key to identify:
- Key type (household, automotive, high-security, etc.)
- Brand and model
- Whether it's a standard metal key or has electronic components (transponders, chips, etc.)
Some keys are easily duplicated, while others require special tools or authorization.
2. Select the Proper Blank Key
The locksmith then chooses a blank key, which is a key without any cuts or grooves. The blank must match the shape and size of your original key to ensure proper function.
There are thousands of blank keys for different locks, so a professional’s knowledge here is critical.
3. Use a Key Duplicating Machine
For traditional keys, the locksmith uses a key duplicating machine. Here’s how it works:
- The original key is placed on one side (the guide).
- The blank key is secured on the other side (the cutter).
- As the guide traces the original key’s cuts and ridges, the cutter replicates them exactly onto the blank key.
After the duplication, the edges are smoothed to remove any metal burrs that could damage the lock.
4. Test the New Key
Once the duplicate is ready, the locksmith tests it (if possible) to ensure it works smoothly in the intended lock.
For automotive keys with chips or remote functions, the locksmith may need to program the key using specialized software.
Common Types of Keys That Can Be Duplicated
Here’s a quick overview of some common key types locksmiths duplicate:
House Keys
The most common type. Includes keys for doors, gates, padlocks, garages, and sheds.
Car Keys
Can be traditional keys, transponder keys, remote keys, or smart keys. Some require programming.
Office and Commercial Keys
Often used for file cabinets, desks, lockers, and high-security doors. Some require authorization to duplicate.
High-Security Keys
These keys offer added protection and may include patented designs. Duplicating them often requires permission or special tools.
Can All Keys Be Duplicated?
Not always. Some keys have “Do Not Duplicate” written on them, while others are restricted by patent or security laws. These keys can only be duplicated by authorized locksmiths or with documentation from the property owner.
Examples include:
- Restricted or patented keys
- Keys with electronic encryption
- Master keys in commercial buildings
- Keys for safes or secure facilities
If you’re unsure whether your key can be copied, consult with a certified locksmith.