Alipay launches mobile payment system based on sound waves in Peking subway

Wed 17 Apr 2013

Chinese provider of payment solutions Alipay launched in Beijing (Peking) subway new billing system, which uses sound waves to communicate between a smartphone and a machine for issuing travel vouchers. Payment system based on sound waves was presented along with the mobile application Alipay Wallet mobile app in January 2013, and uses white sound, produced by a smartphone, to transmit digital information to another device.