@supersquirrel @brem
To quote a facilities manager of my past acquaintance : "a padlock will only keep out an honest man".
This from a guy who kept a metre-long set of bolt croppers in the hat stand in the corner of his office. Everyone knew that if you needed to "recommission" a unit of office space, you borrowed the croppers, and returned them with a note of which address your company was staying in, and what your new phone number was.