Restricted key systems explained (and who actually needs one)
If you cannot say how many copies of your key exist, you do not control your building. That is the problem restricted keys solve.
Standard keys can be copied at any kiosk in ninety seconds, with no record and no permission. A restricted key system replaces that free-for-all with a controlled register.
How it works
The key profile is patented and the blanks are only distributed to authorised locksmiths. Every cut key is recorded against your system, and a new copy requires a signature from a named authorised person on your register.
The result is that you can answer, on any given day, exactly how many keys exist and who holds them.
Master keying on top
Restricted systems are usually combined with a keying plan: staff keys that open only their areas, a manager key that opens more, and a grand master that opens everything. Designing that hierarchy properly at the start is what stops it becoming a mess two years later.
Who genuinely benefits
Small businesses with staff turnover, cafés and shops, body corporates and apartment buildings, real-estate managed portfolios, share houses with a history of copies, and any home where builders and tenants have held keys over the years.
A single-occupant house with two keys and no history probably does not need one — rekeying is enough.
What it costs to run
Higher up-front cost than standard cylinders, then a per-key cost for authorised copies. Against that, weigh what it costs to rekey an entire site every time a set of keys goes missing — restricted systems usually pay for themselves on the second incident.
The short version
- 01Restricted keys cannot be copied without authorisation on a register.
- 02Pair them with a keying plan designed up front.
- 03Best value where staff, tenants or contractors turn over.
- 04Cheaper than repeatedly rekeying a whole site.
FAQ
Questions people ask us about this
- Can I add restricted cylinders to my existing locks?
- Usually yes. Many lock bodies accept a restricted cylinder, so you keep the hardware and upgrade only the part that controls the key.
- What happens if I lose a restricted key?
- You contact the locksmith holding your register, verify your identity against it, and a replacement is cut. If the loss is a security concern, the affected cylinders are re-keyed within the same system.