On Mon, 3 Dec 2012 10:32:43 -0000, "michael adams"
wrote:
------------8


Presumably to stop people who've entered the house by some other
means,
a window etc from easily exiting via the front door when carrying
bulky items .

Along with the lock you get a sign to put on the wall.

"Please do not attempt to jemmy this lock off of the door
as this can damage the wood "

Burglars really care about that sort of thing.