Disclosure: I hate toting keys around, and have used Kensington locks for at about a decade.
This lock is as robust as all my previous Kensington's were, and I go virtually nowhere without one. It is compact, just the right length, and of solid construction. The instructions, however, need work. In trying to explain operation in four languages the manufacturer completely confused this English-language user. When that happens to someone with a technical background, like myself, it's likely time to do some editing.