033: What's In Your Wallet?

What's in your wallet? Chances are its contents are the same as ours, and everyone else. Identification, a bit of cash, and cards. Oh, the cards. Credit cards, loyalty cards, and discount cards. Every slot in your wallet is probably filled with similar looking cards with a plastic strip.

ach one of those multicoloured rectangles is tied to a system, one that's well established, and we've been using for years. For most shoppers, these plastic cards just...are. They exist. It's how things are done.

...but what if they weren't?