Do Not Duplicate Keys: Are They Really Secure?
Many businesses assume that stamping “Do Not Duplicate” on a key makes it secure. But in most cases, it’s more of a suggestion than a restriction—and that can put your commercial property at risk.
At Affordable Security Locksmith And Alarm, we help Phoenix businesses understand what “Do Not Duplicate” really means—and offer better solutions to keep your keys and access points secure.
Need real key control? View our Phoenix commercial locksmith services
What “Do Not Duplicate” Actually Means
Keys stamped with “DND” are meant to discourage unauthorized copying—but there’s no law preventing hardware stores or even some locksmiths from duplicating them.
Without a restricted keyway, anyone with physical access to the key can likely get a copy made.
Why This Is a Problem
Anyone can
Make a copy without your permission
Use a duplicate to enter after hours
Share copies with others
Access sensitive or restricted areas without detection
This creates a major security and liability issue, especially if you can’t track how many keys are out there—or who has them.
The Better Solution: Restricted Key Systems
We recommend switching to restricted or patented keyways, which offer
Legal protection against unauthorized duplication
Key blanks that are only available to licensed locksmiths
Key tracking with documented authorization
Unique profiles registered to your business
With this system, only authorized individuals can request or receive duplicates—and only from us.
Benefits of Restricted Key Systems
True key control and accountability
Prevent inside theft or access abuse
Reduce the need for rekeying
Protect high-security areas (IT, finance, HR, etc.)
Add professionalism and peace of mind for multi-tenant properties
Ideal for
Property managers
Office buildings
Retail storefronts
Medical clinics
Schools and child care centers
Warehouses and contractors with tool storage
How to Upgrade
We’ll
Audit your current key and lock setup
Install high-security locks with restricted key cylinders
Create a key issuance log for staff
Track duplicates and issue new keys as needed
Rekey your building to stop unauthorized copies in circulation
Areas We Secure in Phoenix
We install restricted key systems across
Arcadia
Ahwatukee
Maryvale
Downtown Phoenix
Camelback East
Biltmore
North and South Phoenix
And cities throughout Maricopa County
Stop Trusting a Stamp—Start Controlling Your Access
If you’re relying on “Do Not Duplicate” keys, your business may be more vulnerable than you think. We’ll help you take back control with locksmith-grade protection that actually works.
Affordable Security Locksmith And Alarm – Phoenix
(602) 854-2766
affordablesecurityphoenix.com
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Want true protection from unauthorized key copies?
Let our Phoenix commercial locksmiths install a restricted key system for your business