Triangular "bolt" euro cylinder

[DaveAG]

I noticed an odd euro-cylinder the other day in a very low security environment (toilets of a McDonalds).

The plug is recessed except for a triangular bolt head like you find on gas meter boxes etc.

I had never seen anything like this either before, or for sale? How common are these? and with 5 pin no-name euro cylinders for sale to the public at under £4, how much will have been saved in installing these ultra low security cylinders?

Or am I missing something completely here?

EDIT: Image attached

[Shrub]

I think the point is so that anyone can open them, there should be a thumb turn on the inside.

Youll find these where the fire brigade may need access like disabled toilets etc.

A lock only keeps an honest person out and lets be honest it takes a saddo to break into a toilet, its just a little harder than using a coin to open the lock from the outide so in that instance the triangle one is actually a higher security one than you would normally find.

[DaveAG]

It was only a single cylinder, no access from the inside whatsoever.

It also wasn't to the cubicle, but the main door from the restaurant itself. I guess the point of the lock was to close the toilets off, but I was perplexed as to why such an odd part was in use rather than just a standard 5 pin cylinder, or no lock at all.

[Chrispy]

It's just a high security privacy lock. Not as easy as using a screwdriver to open standard privacy locks, but not as difficult as picking a lock in the case of emergency/lost keys/whatever.