* Catima seems nice "Apple Wallet Clone" for Android except actually
allows me to add all my cards unlike Apple Wallet
* Play Store link just in case
* CovPass seems easier to teach than downloading the pdf and teaching
how to transfer it from Downloads (and where Downloads directory is)
and maybe people around me actually technically get through the check
when asked
* iOS? https://covidpass.eu doesn't need adding a note
Ref: #234 ?
