Witness History cover image

The man who invented the scratch card

Witness History

00:00

Early promotional giveaway games and their security flaws

Johnny I’Anson asks about early probability giveaway games; John Koza explains how free store promotions worked and why they were easy to cheat.

Transcript
Play full episode

The AI-powered Podcast Player

Save insights by tapping your headphones, chat with episodes, discover the best highlights - and more!
App store bannerPlay store banner
Get the app