关于遵循App Store隐私准则的单设备账号验证功能合规性问询

Hey there, let's clear up your concerns right away—your approach here is totally safe and compliant with Apple's App Store guidelines, especially when it comes to IDFA rules. Here's why:

• You're not using IDFA at all: The IDFA popup requirement only applies when you're using Apple's official Advertising Identifier for marketing, ad targeting, or attribution purposes. Your custom random token is a self-generated string solely for account security (stopping users from sharing access), which has zero to do with ad tracking. So you don't need to trigger that IDFA consent popup at all.
• Be transparent in your privacy policy: Apple's big on transparency, so make sure your app's privacy policy clearly states what this token does: that it's used to verify if the current device matches the one the user logged in with previously, to prevent unauthorized account sharing, and that it's never used for advertising, cross-app tracking, or any marketing-related activities. As long as you're honest about its purpose, you're good to go.
• A few quick best practices:
  • Store the local token securely (like using Keychain on iOS) to avoid any accidental exposure.
  • Follow data minimization: don't tie this token to more user data than strictly necessary for the verification check.
  • Give users control: when someone logs out of their account, make sure you delete the token from both the device and your backend.

This setup is a common, acceptable way to enforce account security without running afoul of Apple's privacy rules. You're focused on protecting your content and users, not tracking them for ads—Apple has no issue with that.

备注：内容来源于stack exchange，提问作者Ando