iOS Passbook not downloading from passbook scan

Question

I am creating an app that creates .pkpass files. The file gets downloaded properly on Android by scanning the link from a QR code and it also works on iPhone if I click on the link from the browser OR scan it with an external QRCode Scanner. But when I try to scan the QR from the Passbook app's internal QR Scanner then it reports that

No Pass Available for this code

I know that the pass is valid and the mime-type also is valid since it downloads on the iphone correctly when used by link or other QR Scanner, but not from passbook's scanner.

Any suggestions?

Answer 1

You must distribute the pass over HTTPS using a certificate trusted by the device.