I carry a light weight cable and lock whenever going some place like the store or the doctor's office and lock the bike out front where it can be seen. Never had a problem. If you lock at a parking meter or some other obscure place, expect it to be stolen. Also, cables are a great way to secure bikes and their wheels and in my case expensive leather saddles when on a rear back rack. That all said, I never let an expensive bike out of my sight. (Hey, I'm a poet! bike - sight)