Today’s video is about the **Luhn Algorithm**, a simple mathematical algorithm that you can use to verify the correctness of ID numbers that conform to it. Credit cards are the most common example and that’s what I talk about today.

Sorry about the shadow, I started using some new lights and I’ll have to work on the shadows in the future. But there’s more light right? ðŸ™‚

You can read more about the Luhn Algorithm at Wikipedia ^{[3]} and here is the aforementioned 50 Fun Facts about Credit Cards ^{[4]} post.