I am a registered iOS developer. I generated an IPA file using a signing identity that qualifies for App Store submission.
I sent my client this IPA file but macOS won't open it. It claims that this file comes from an unidentified developer. While there is a workaround by option-clicking the file, I want to know how a client can set Gatekeeper to trust all app files signed by a given identity.
It is likly that the client is running Mountain Lion or Sierra.