The discussion Create a QR code for invites revolves around integrating QR codes into the invite modal on the sidebar. nathank suggests using QR codes for invites, especially for in-person events, and proposes it as a potential Theme Component. tobiaseigen requests a mockup of the idea, but nathank points to an existing meta discussion that is halfway to solving the issue. nathank believes that refactoring invites to use the core Sharing API would be a sensible solution. Andrew_Rowe agrees with the idea, liking the QR code shareables component, and thinks it would be great for invites, especially for in-person events.
On my sites, it is better to have a QR code for an invite as opportunities often crop up at in-person events. Have you considered rolling QRs into the invite modal on the sidebar?
I guess this could be a nice little Theme Component. Personally, I’d be delighted if I could simply insert a QR code image I already have into the modal. So far it has resisted my attempts to do so though!
can you share a mockup of what you have in mind?
Apologies, I never got around to that. But it looks like our wonderful community is half-way to sorting this already:
All that is needed for this to also be applied to the new Invite modal would be this:
Any chance the invites could be refactored to use the core Sharing API? To my mind, this would make a lot of sense all around, and mean that this feature can be nicely marked as completed
This is a great idea 
I was reading just now about the invite system being a little tough to work on
I love the QR Code Shareables component. Like Nathan said, it is great for in person events and would be awesome for invites