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DevSkim/guidance/DS165348.md

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Do not attempt to access device UDID

Summary

  • Code that references uniqueIdentifier was found.
  • Replace usage of uniqueIdentifier with identifierForVendor or if your application has a service component, use the DeviceCheck API.

Details

Access to the device UDID (via [[UIDevice currentDevice] uniqueIdentifier]) is deprecated as of iOS 5 and removed as of iOS7.

Solution

Replace usage of uniqueIdentifier with identifierForVendor. Note that identifierForVendor may change if the user uninstalls all applications from a vendor and then re-installs an application from that vendor. If your application has a service component, consider using the DeviceCheck API.

Severity Considerations

Applications relying on uniqueIdentifier can no longer target current, supported iOS versions and must be updated.

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