Bingo started with paper cards and daubers, but today many players enjoy...

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

Bingo started with paper cards and daubers, but today many players enjoy 90-ball games on their phones. Auto-dabbers do the marking for you, so you don’t miss a number while chatting or multitasking