 Luckily, Amy saved big at Amazon. Rufus is a chatbot that sits at the bottom of the Amazon smartphone app on iOS and Android. It's a little tiny icon. Bloomberg technology reporter Matt Day. So you're browsing a book, press the button, and it'll come up with some suggested questions. To learn more about the book, you can ask it your own. It's the same sort of free-form text conversation type interface that folks should know from ChatGP.