The Technical Steering Committee discussed this on their latest call. Overall, there was enthusiasm for moving this existing QR code configuration feature to a more prominent location.
This feature intersects with other recently-discussed themes including introducing an API for the servers to configure clients and client multi-tenancy. There was no concern from the TSC about that interaction.
@adam.butler requested a less cluttered icon. I thought https://material.io/resources/icons had one but it does not. I believe that the one in the mockup comes from https://materialdesignicons.com/icon/qrcode-scan and that's the nicest one that I was able to find with a quick search. I wonder whether perhaps it would look ok scaled down?
But before spending any time on icons, @danbjoseph also suggested pushing the scanning functionality into the overflow menu instead. That way there can be some words to explain what it does and it's less likely that someone would accidentally reconfigure a device because they're trying out very visible functionality.