I set my machine to Screen Lock (I've got a Mac) and my laptop has the Encrption turned on the hard drive (FileVault). Finaly I carry a Kensington lock cable, and I put it around something large, heavy and solid and if I can find it, something that is attached.
Like at Port Orleans I have to use the Wash Basins. At PopC, I have to use the clothes rack/shelf, it's not optimal, but it's what I can find.
johno