All systems of key control rely on the limited availability of registered keys. These should only available from reputable locksmiths and security centres, who undertake to check identification and only supply keys to properly authorised people. If keys become freely available – or if pirate copies are produced and circulated on the black market – then security will be fatally undermined.
There is currently only one way to prevent third party manufacturers from producing copies of keys and selling them to anybody they choose, without necessarily observing any security precautions. That is if the design of the key is patented. Patents are valid for 20 years and allow manufacturers to take legal action against anyone supplying keys to that design without permission.
When specifying patented products you should ensure that the manufacturer’s patents are still current, apply worldwide, and will be enforced.
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