No more waiting in long queues to buy tickets
People in Beijing can now use QR codes as tickets across all subway lines, after 6 million passengers tried it during a trial over 20 days.
They need to download an app called Ruubypay and connect it with either their bank account, Alipay, or JD Finance account. A QR code will be generated as you open the app, and by putting your phone near the QR code reader, it will let you pass through almost as fast as using an actual ticket.