Strange Key Way

[Project]

i was eating at a seafood buffet today, and i notice their front door had a really unusual lock. The shape of the keyway was a H. Any of u guys have any clue what kind of lock this is?

[Theros]

Heya, about the only thing ive heard is an excerpt from the text file about high security locks...

Codem

(F) 5-pin-tumbler, H-profile key (2)

The codem lock cylinder is a standard size euro-profile cylinder with an
H-shaped keyway. There are 5 conventional pin-tumblers in one line along one
side of the H. Keyway access is restricted as compared with standard
pin-tumbler locks. The key is symmetric and can be inserted either way round.


There is another in that text with a H shaped key made by Fichet tho it seems unlikly that that was the actual lock you saw as the text classifies them as "Near obsolete".

Hope this is some help...

Theros