Helmet lock

I have a Shoei GT Air 2 that has the micro ratchet chin strap. What are some options to secure it? My 07 has the D-ring tabs under the seat. Is there an adapter? I'd prefer not to lug around a cable lock.

 

I have a short cable that loops through visor opening and both ends hook on bike lock, not much to carry around.

 

I put a "split ring" the type of thing on key rings onto my Schuberth helmet as it has the same type of strap as yours, works ok with the helmet lock

 

Any chance you have a picture of that setup?

 

I've also used the short cable through the visor opening, when I've used one, which is seldom. But FWIW that's going to be a lot
more secure than hooking to the strap.

 

this is what I meant, the "loop" is metal so I do not think it is going to cause any trouble just hanging from the strap

 

Thanks. The pics helped.