Heck, when I flew up to CTS last weekend from HND my JL-issued boarding passes didn't even have my name on them. The tour company had a whole pile of boarding passes and just counted them off for folks. I presume they would be on the hook to give JL names should something happen. There's no way they could implement ID checking even if they wanted to.
When I paid 1,000 JPY to upgrade to Class-J, the JL staff needed my name so that they could create a real booking. But even then the boarding pass didn't have my name on it.
Security over here is really sensible.