I submitted this article because I didn't know about the new(?) type of fraud around gift cards. From the article:

Walmart's gift cards are worthless until customers load them with cash. Once loaded, the company requires shoppers to input a card's hidden security code when using it to make purchases online, but not at self-checkout.

Wilson says a fraudster could easily take photos of a bunch of the cards' bar codes at Walmart, and then try to buy goods with them at self-checkout at a later date — in the hopes the cards have since been loaded with cash.

"It's sort of, like, egregious," he said. "All the cards in Walmart are on bulk display. The bar codes are in plain sight."