I heard that a lot of restaurants in Chengdu are going to start setting up machines that support cell phone payments? I think it's called Mo Cube or something, I can use my own cell phone in the future. The Bat, a technology that utilizes sound waves or ultrasound to achieve proximity and contactless data communication, is a non-contact data transmission technology that enables proximity and contactless data communication between mobile devices (e.g., cell phones, PDAs, and PADs), consumer electronics, PCs, and smart control tools. Bat" provides a complete, safe, reliable and effective set of technology collection, and has been successfully applied in MoBao's e-commerce platform, MoCube, and MoBao Mobile Payment's O2O offline payment, allowing consumers to fully experience the fashionable and convenient mobile phone-based on-site service.

Mobile phones don't need to be enabled, and you don't need to buy a card. Just download Mo Cube's client, open the bat, and you can realize the near field payment.