text:  Speaking of which, I find this topic fascinating. And as I said off the top of our interview, it's something everybody does, shop, whether it's at retail or online, and it is changing. So is there a place we can learn more, Mark, about some of these technologies you've chatted with us about? Yeah, I would just go to the Visa website, Visa.com, and it has information about a lot of these things, a lot of the things that we do to make payments secure and safe and convenient. So I would just direct consumers there.