A Do Not Duplicate marking and a restricted key system should not be treated as equivalent evidence of copy control. Ask how the actual system restricts key blanks or duplication and who is authorized to request another key. A marking alone does not describe those arrangements.
Check the system, not just the label
The responsible key-control contact should identify the hardware or system and the established ordering procedure. Do not publish key-cut photographs or registration details while seeking advice. A locksmith can explain what information is needed through the appropriate channel.
Ask whether a copy requires a registered authorization, which supplier handles it and how a completed request is recorded. Product restrictions and ordering procedures vary; avoid promises that a key is impossible to copy or that any shop can duplicate it.
Maintain the issue record
Copy control does not replace custody control. Keep a private register of issued identifiers, holders and returned keys. A missing issued key remains an access concern even when future duplication requests are controlled.
If a business is changing systems, compare authorization, replacement availability and ongoing administration alongside the hardware. Clarify building or lease constraints before approving alterations.
Review commercial locksmith services and contact the Vancouver team with the system identification and authorized contact. The question is how access is managed over time, not simply what words appear on the key.