My wife and I used a cable lock to secure our bikes to this fence in a Swiss campground. Then before daylight we walked 4 miles to the train station in town and took 3 different trains to visit Grindelwald, a city I dreamed about since I was a kid. I had always wanted to climb the North Face of the Eiger, but on this day, at my age, I was just happy to see it. We got back well after dark, and the bikes were still there. It is all about situational awareness. I would not leave our bikes at the train station for more than 10 minutes, but felt pretty comfortable leaving them in the campground for the day.