On Wednesday 31 July 2013 22:09 Nightjar wrote in uk.d-i-y:

On 31/07/2013 21:51, charles wrote:
In article , The Medway Handyman
...
They might well be security keys. If they have a 'very' long number
stamped on them, only the locksmith who supplied the locks can cut keys,
only with the written authority of the owner.

I understood that it was ruled an infringement of free trade to make that
condition. Certainly I have had no difficulty in obtaining duplicates of
apparently "secure keys" from a repautable locksmith.

I was under the impression that refers to restricted profile keys,
rather than high security keys.

Colin Bignell

There's alot to be said for card keys or dongle keys - you can program the
lock to renounce all previous keys and effectively have multiple keys that
have their own ID (so any single one can be removed from the system).

Also makes the handling of "master keys" infinitely flexible.

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