Well-spotted feature by Tom Warren, as reported by iMore’s Rene Ritchie:
Apple could obviously change the PassKit format to block what Microsoft is doing here, and I think they have fair grounds to do so, but I hope they don’t. There are loads of Android apps that support the
.pkpass format, and it’s become a de facto standard in the industry. In fact, it’s one of the only standards in the mobile payment solution space.