I had just returned from a late-night run to the convenience store. My hands were full and I set the bike against the wall to carry in some things first. There are two doors to get into my apartment building, one external, one in a courtyard. I don't remember clearly which door I set it next to, but when I came back for it, it was gone, lock and all. This is a very tall bike, it is unlikely most people could ride it away. It would have to be walked, or put in the back of a vehicle.