Wechat login for mobile website
<p>Wechat has a very convenient <a href="https://open.weixin.qq.com/cgi-bin/showdocument?action=dir_list&amp;t=resource/res_list&amp;verify=1&amp;id=open1419316505" rel="noreferrer">QR-code login option</a> (sorry, Chinese only) for desktop websites. Basically you just scan the code with Wechat, click OK, and you're logged in.</p>

<p>However, I'm struggling about how to implement the same functionality when the same website is accessed via mobile?</p>