Users use WeChat's "Scan" feature to scan a payment code generated by a merchant on a web page to make a payment.
"Web payments allows order information to be embedded in a unique QR code. By scanning the code in WeChat, users complete the payment after passing the security checks.
Merchants with a website with a large number of Chinese users are recommended to integrate WeChat Pay into the website."
Merchants have access to this feature by default after signing up with WeChat Pay.
User goes to 'Scan QR Code' in WeChat and scans merchant's QR Code and enters payment password to confirm the transaction. > Payment is completed and confirmation sent to the merchant and user.