A week ahead of the G20 Summit in Hangzhou, East China's Zhejiang province, a bike-sharing service moved a step closer to embracing the mobile internet era by enabling anyone with a smartphone to rent a bike by simply scanning a QR code.

Many people say that Hangzhou is a city where you can survive with only a cell phone - everything can be paid for via mobile payment apps, including Alipay or WeChat Pay. Starting from Sunday, people have one less thing to worry about, with the scanning of a QR code enabling access to free biking almost anywhere in the city.

An official app can be downloaded, but even without one, you will be fine, as long as you have the WeChat app on your phone, which has almost become a must-have for anyone living in China.