Btw. Pico and HTC Vive are standalone devices if your customer’s reason is portability.
I work on simulation projects and one my project was creating an MR machine part catalog. Users could read QR code of machine and they will see CAD file in front of their eyes while they can see real world environment (for example a machine on factory zone)
We have similiar use cases. You wanted to detect an image or object and I want to detect QR code. Both of them are artifacts outside of digital world and both of them require image processing.