If the work is framed with metal section frames, Nielsen makes a security hanging system which consists of two hangers which screw into the wall and a latch at the bottom which is hidden from view when the picture is on the wall. When you press the bottom of the frame against the latch it locks into place, and can only be released by using a "key" which they provide. I bought about 50 of them a few years ago and I think they cost about $2 apiece then. For wood frames, when there is a security concern, with the artist's permission we drill a small hole in the back of the frame and attach a small mending plate. The bottom of the mending plate sticks out and can be screwed into the wall, and painted to match the wall so it is less obtrusive. I noticed that the National Gallery used this method to install small works in their Georgia O'Keeffe show some years back. Aside from security, both methods also insure that the work will not have to be straightened during the run of the show! The down side is drilling and filling all those holes in the walls. Helen Glazer [log in to unmask] Goucher College, Baltimore, Maryland [log in to unmask] wrote: > Could anyone give me suggestions on how to hang 2-D work in a way > that would deter or prevent theft? I work at an art gallery on a > CSU campus that displays art in high-access public areas.