How to access passes from passbook in app?
Create AppId which is similar to passTypeIdentifier. For example if your passTypeIdentifier is pass.abc.xyz then your AppId must be com.abc.xyz .While creating provisioning profile make use of this appId and make use of this provisioning profile for your app. Then only you will be able to distinguish passes available in your passbook.
Also, Keep in mind that the App ID you signing your code with should be Enable for Passes on the Provisioning portal as well.