> I think that the security issue @jakearchibald raises about the security risk introduced if the app provides a logo and label, is very important. We've come up against this "How do we verify an apps integrity?" question multiple times and I don't know if we have a good answer.
I think we need an answer before we continue.
The whole question of how to present recommended-but-not-installed payment apps is based around the idea that we *want* the browser to be able to display the options in a blessed UI and potentially (if selected) install the service worker, and grant permission for that to be a payment app.
If presenting that information in a blessed UI lowers security, we *do not want* the browser to do it. If that's the case, all this stuff about manifests & link headers is redundant.
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