Witness History cover image

The man who invented the scratch card

Witness History

00:00

How Koza developed a secure printing method

Johnny asks J&H's need for security; John Koza describes his multi-pass printing technique that created hundreds of thousands of unique, secure tickets.

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