I use the signpass form the Apple passbook demo passbook_materials to create a .pkpass file I have created my pass type ID and change the passTypeIdentity in the pass.json. When I execute: ./signapss -p ./myPass in terminal, it shows:
Couldn't find an identity for pass.com.xxx.xxx.
Does someone know this?
You need to install your certificate into your keychain (double clicking on the file downloaded from Apple will suffice). You need the Apple WWDR certificate installed in your keychain also. You also must make sure you set the teamIdentifier field in your pass.json to the correct value, not just the passTypeIdentifier field.