Ticketless is going to be main method such as flight or train/underground in Japan.
On the other hand, the absolute "Ticketless" is free of charge.
I watched and shot a women's football match. Before that, I asked about the tickets at the official team shop(basically for men's team) but, they didn't know. And then, I inquired another team staff about it, eventually the answer was "no tickets". Everybody can watch the match for free.