Bingo began with paper cards, where players marked numbers by hand. The shift...

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

Bingo began with paper cards, where players marked numbers by hand. The shift to digital brought auto-dabbers, making it easier to keep up with fast 90-ball games (1-90)