One of the important functions Bitcoin-wallet Luno is that users can buy and sell digital currency in the application itself. But this function is only available for the regions in which it is supported. For inexperienced users such mobile bitcoin-wallets will be very useful. They can do everything they need, using only one application, without opening the browser window for trading bitcoins. This wallet is called smart, because it is designed to study the behavior of users. Luno plans to release a generation of virtual credit card numbers for its wallet. With their help, users will be able to spend bitcoins around the world.