Display channels as QR codes for desktop visitors to scan with their phones.
How to get there: Go to Setup → Website widget in the top menu → click your widget → click on a channel → enable the QR Code option.
When customers browse on desktop, scanning a QR code lets them:
Open the channel you want as a QR code
Enable Display as QR code
Save your changes
Create the same channel twice for different devices:
Use mobile/desktop settings to show each on the right device.