Security on internal doors that are part of the means of escape

[Mike Buckley]

Yes but stock rooms don't tend to have the same level of security and surveillance that the shelves have.

[AnthonyB]

Plus in shops like mobile phone stores, where entry control systems on doors are a key part of security the stuff on the shelves is dummy or cabled to the wall, the high value stuff is off the shop floor

[CivvyFSO]

Ah, I was being rather close minded there, but you do see it in card shops and all sorts of places where it is quite unnecessary.