Use this library to generate passes, coupons, event tickets, store cards and generic passes:

• Fill all mandatory fields in order to generate your pass
• Fill the passType (check the documentation on the field to understand which are the allowed values)
• Download your global apple certificate from here and add the .cer file to the certificates structure
• Follow these instructions to generate your own pass certificate and add both the .p12 file and the password to the certificates structure
• Fill any extra data you find relevant and add your fields to the Fields list
• Call the GeneratePass action
• ...
• Done!

(if you have an apple phone the .pkPass file will be automatically opened by your wallet; if you don't install an app that is able to read .pkPass files, such as "Pass2U Wallet", and the app will automatically open these files for you)

All fields are documented and you can read additional documention on the fields and the generated .pkpass package here. 

There are specific rules and renderings for each pass type. To understand how the fields will be rendered according to your passType, read the documentation here.