Currently Salesforce Marketing Cloud not supports QR Code hence I have created custom SSJS code using the Google QR API. Please find below same.
Most of the time business wants to use custom profile center instead of vanilla or out of box profile center. Without profile center and physical Email Address you cannot send email. To overcome this scenario you need to add profile center and physical Email Address in Email and hide it using Ampscript.
How to make salesforce application Multilingual.
Pseudo Code to call WF Async and Sync Mode in eScript