"F Murtz" wrote in message
...
tim..... wrote:
Just moved into my new flat.

It has DPS "High Security" locks which are (presumably) un-pickable.




they are not usually unpickable,they often have a registered slot pattern
which most locksmiths will not copy without authorisation.

In fact often mastered systems are easier to pick because they have
multiple pins per slot which allow differing keys to line them up, which
allows the picker more choices.

So what's the patentable element then?

The provision of "security" by restricting of copying because of the patent
seem to be a circular argument that doesn't justify the patent ;-(