jetski's toolbox - today: individually coded anti theft wheel nuts

Dear ladies and gentlemen,

here's a design for an individually coded (>100.000 combinations) M9 anti theft 3-pin nut/tool set for track wheels, especially the front wheel as it would allow to carry only one lock. Tool and nuts would be quite easy to be manufactured on a lathe, no CNC needed.

The diameter of the nut would be 26mm, quite much, but still less than the Pitlock nuts that only exist for M10 anyway. The benefit is the 37° conical outer shape to prevent it from vise grip attacks.

Please let me know if something like this (with individually coded nuts and tools) already exists(??), and what you think of the design.

jetski

http://www.lfgss.com/picture.php?albumid=1582&pictureid=9116

Would this not be the same as a pinhead design?
http://www.pinheadcomponents.com/
I'm not sure if they have a patent