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

https://source-wiki.win/index.php/How_Do_Digital_Bingo_Purchases_Work_Compared_to_Buying_Paper_Tickets%3F

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