I'm not sure how much money Kensington really makes from it. They make locks that fit in the slot, but so do a lot of other people now. And I don't think that

I'm not sure how much money Kensington really makes from it. They make locks that fit in the slot, but so do a lot of other people now. And I don't think that they charge licensing fees -- it's just a slot in the plastic, occasionally (in better implementations) backed up with sheet metal. What surprises me is that nobody thought to standardize on something like it sooner; I remember the pre-Kensington PC locks and they always sucked. Most of them sold you big plates and tubes of epoxy that you were supposed to attach to your computer's chassis, and then loop a cable through.