Customer would be able to use his WeChat account to login in nopCommerce.
You need first to register WeChat/Weixin account at https://open.weixin.qq.com. After registration is completed, you must provide AppId and AppSecret you received at the plugin settings page. After plugin activation, your customers would see the WeChat icon at the login/registration page. Clicking the icon follows with the presentation of the QR code by WeChat. Customer scans it with WeChat’s application on his mobile phone. WeChat’s application asks to confirm the login. After confirmation, customer would be redirected back to nopCommerce and authenticated.
WeChat does not use e-mails, therefore, WeChat customer would be asked to login or register in nopCommerce first. At the next step, he scans WeChat's QR-Code again to connect his WeChat account with nopCommerce. After connection is established, the customer would be able to login just using WeChat application on his mobile phone.