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Learning Mobile App Development: A Hands-on Guide to Building Apps with iOS and Android by Michael Eierman, Jakob Iversen

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Backing Up the Development Certificate

When you start development, Xcode will generate a public/private key pair that is installed in the Keychain Access app on the Mac you develop on. When moving to a different Mac, you will need to bring this public/private key pair along. So, as soon as the development certificate is set up, be sure to take a backup to use on other Macs. This is especially important for students working in labs. If you don’t have your students do this, they will have to revoke their existing certificate and request a new one, because the private key would be only on the machine where it was generated.

To back up the certificate, in Xcode, choose Xcode > Settings > Accounts, click the gear icon in the lower left, and then select ...

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