Well, for the free people I would advise against usage of phone wallets… this is just another (supplemental) tracking. I prefer to use cash (with its shortcomings) whenever I can.
this is an App to unpack a pkpass - basically a zip file. It’s not the “payment wallet” type App. It has by spec some ability to be networked, though I’d be surprised if it can be used for effective tracking (it is relayed and a send-only process in the docs)
Just installed fWallet from fdroid, however it didn’t show any reaction to an import of a .pkpass file, neither the ticket appears in the app nor an error is shown.
As an alternative, PassAndroid worked with that file.