PassKit Pass - Opening iOS app from a pass

Question

I noticed a few PassKit wallet passes can open their originating app, right from the pass. The iOS app opens when the pass icon is clicked, for example in Delta Airlines passes.

I can't seem to find any documentation or examples on this. How can one add this to a PKPass ?

Answer 1

You can use the appLaunchURL key in the passes' pass.json.

https://developer.apple.com/library/archive/documentation/UserExperience/Reference/PassKit_Bundle/Chapters/TopLevel.html#//apple_ref/doc/uid/TP40012026-CH2-SW1