Bingo has evolved from marking paper cards by hand to digital play with...

https://measuralogic.com/what-happened-to-the-bingo-card-the-technology-reinventing-a-classic-game/

Bingo has evolved from marking paper cards by hand to digital play with auto-dabbers that catch numbers instantly. In 90-ball (1-90) bingo, players can join games for as little as 1p, 10p, or 20p, all from their phones