Bingo has evolved from paper cards to convenient digital play, especially with...

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

Bingo has evolved from paper cards to convenient digital play, especially with 90-ball games popular in the UK. Auto-dabbers now mark numbers automatically, letting you focus on the fun while playing on your phone or tablet