To send or display a QR code to your audience for accessing your item follow these instructions:
1) Publish your item
2) Click the "Share" button
3) Click the "Share Link" tab
4) Copy the link to your item landing page
5) Go to a QR creator (Adobe offers a free QR Code Generator) and use the link you copied to create the QR code
6) Show the created QR code to your audience