Yes, as long as it slows them down or makes them think second about doing it. Like the kids that tried to steal my van. They used a screwdriver to damage the door, the door lock, and the steering column, but the steering column lock (and the lack of their experience), kept them from driving off with it. I wonder if there is also some steel where that plastic loop is located on the iBook. P "Alric J. Lam" wrote: > I use a Kensington Security cable. I dont think it will stop someone who really wants to steal it, since I think the plastic on the iBook would give way with a strong tug ( I havent tried it!) But its better than nothing and at least would have to make the thief work for it. > > My 2 cents....