# Changes in Game Center Sign-In

DevFeed: [Changes in Game Center Sign-In](<https://devfeed.tech/articles/changes-in-game-center-sign-in-16506.md>)

Original publisher: [Read original article](<https://firebase.blog/posts/2023/01/firebase-auth-gamecenter>)

Author: Peter Friese; Helen Zhou

Published: 2023-02-02T00:00:00Z

Content type: news

Language: en

Sources: [Firebase Blog](<https://devfeed.tech/sources/firebase-blog.md>)

Topics: [Firebase](<https://devfeed.tech/topics/firebase.md>), [Authentication](<https://devfeed.tech/topics/authentication.md>), [SDKs](<https://devfeed.tech/topics/sdks.md>), [REST API](<https://devfeed.tech/topics/rest-api.md>)

Tags: [apple](<https://devfeed.tech/tags/apple.md>), [authentication](<https://devfeed.tech/tags/authentication.md>), [deprecated](<https://devfeed.tech/tags/deprecated.md>), [firebase](<https://devfeed.tech/tags/firebase.md>), [rest-api](<https://devfeed.tech/tags/rest-api.md>), [sdk](<https://devfeed.tech/tags/sdk.md>), [updates](<https://devfeed.tech/tags/updates.md>), [upgrade](<https://devfeed.tech/tags/upgrade.md>)

## AI overview

Firebase is changing Game Center Sign-In user identifiers in Firebase Authentication because Apple deprecated the previous object property. Developers must upgrade the Firebase SDK, and direct REST API users must send both the existing and new identifier fields. The migration is irreversible and updated SDKs and REST API support were expected in early February 2023.

## Source excerpt

News, tutorials, and updates from the Firebase team.