It's a bit more than that. A retractable motorcycle helmet lock recently stole my "KISS" (keep it simple, stupid) prize for some duration, offering enough cable length to secure my ATGATT riding jacket as well. Smaller than a bar of soap, the product I'm growing savvy to gets easily overlooked for all of the right reasons.
Years back, my first helmet cost me just shy of a hundred bucks. While today I'm not hemorrhaging disposable dollars for whatever Schuberth aims to rake, I do enjoy the quiet, comfortable protection offered by higher shelf brands like Shoei and Arai. With bigger price tags than entry-level noggin' cradles, I prefer said investment not walk off in someone else's hands.
That's why I ordered something that can secure all of my riding gear to the bike at once. I figure it's better to tick multiple boxes with one purchase where possible. Many go the "lock helmet to motorcycle seat" route (D-ring to mechanism). I'm now able to secure my riding attire using a motorcycle helmet lock that, well ... wasn't intended for motorcycle helmets.