Here is another article on Bike Theft in a major urban center of San Francisco USA. Here the writer attempts to locate latest one (yes one) of several bikes stolen from him over a period of time. He did everthing right as far as a good citizen of the upper class (i.e. not poor) would or should do under the same or similar circumstances. Read this article with an open mind and heart-and be grateful that you are considering or own a folding bike of any make or model. Because they are so portable, they are the closest thing to theft proof that one can buy. Not those pricey U Locks with names like Pit Bull, New York or some other nonsense like that. Just try to collect on the insurance that is offered with some of those locks. Now that is a real nightmare!