Guideline 5.1.1 - Legal - Privacy - Data Collection and Storage
We noticed that your app requests the user’s consent to access their camera but does not clarify the use of the camera in the applicable purpose string.
Next Steps
Please revise the relevant purpose string in your app’s Info.plist file to specify why the app is requesting access to the user's camera. You can modify your app's Info.plist file using the property list editor in Xcode.
To help users understand why your app is requesting access to their personal data, all permission request alerts in your app should specify how your app will use the requested feature.
Resources
For additional information and instructions on requesting permission, please review the Requesting Permission section of the iOS Human Interface Guidelines and the Information Property List Key Reference. You may also want to review the Technical Q&A QA1937: Resolving the Privacy-Sensitive Data App Rejection page for details on how to provide a usage description for permission request alerts.