My thirty year old BMW F650 Funduro has a short plastic coated steel wire with an eye at the end fitted beneath the seat. There is a matching hook. Open seat, feed wire through chin bar of helmet, hook onto hook, close seat. Helmet locked to bike. This is actually pretty good.
And I recall just about every Japanese motorbike in the 1970s had a crappy helmet lock on the frame next to the rear shock.
So I think the word “innovation” is pushing it a bit.