# Prepare for Apple's App Store data disclosure requirements

Apple requires developers publishing apps on the App Store to disclose
[certain information](https://developer.apple.com/app-store/app-privacy-details/)
regarding their apps' data use. Apple has
[announced](https://developer.apple.com/news/?id=vlj9jty9) that these
disclosures are required for new apps and app updates starting December 8, 2020.
This page explains the Google Sign-In for iOS and macOS SDK's data collection
practices to make it easier for developers to answer the questions in App Store
Connect.

To enable your users to sign in quickly and securely, the Google Sign-In for iOS
and macOS SDK may collect the following:

- User identifier, to record OAuth grants created with the user's consent.
- IP address, which may be used to estimate the general location of a device for fraud prevention.