Kotaro Kamashima
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    # AdjustのiOS14対応について ## iOS14で変わったこと > ユーザーの許可を得ない限り、デベロッパがユーザーをトラッキングしたり、ユーザーのデバイスの広告識別子(追記:IDFA)にアクセスしたりすることはできません。 Apple公式の情報:[ユーザーのプライバシーとデータの使用](https://developer.apple.com/jp/app-store/user-privacy-and-data-use/) WWDC 2020 Special Event Keynote:[Youtube動画](https://youtu.be/GEZhD3J89ZE?t=3480) <br> > デフォルトでは、ユーザーがアプリを起動した時点ではオプトアウトされています。通知を受け取ったユーザーは、オプトインするか、あるいは、オプトアウトして、アプリベースでIDFAの共有を許可するか(アプリAではオプトインするがアプリBではオプトアウトするなど)を決定できます。 [iOS14の変更に向けての準備と対策](https://www.adjust.com/ja/blog/getting-your-company-ready-for-ios-14/) <br> ## 【重要】どうやってユーザーの許可を得るようにするのか。 ユーザーデータを計測する場合に、アプリ内でポップアップメッセージを表示させてユーザーの同意を得る機能を作る。以下では、この機能をトラッキングID許可申告ダイアログと呼ぶ。 <br> ## トラッキングID許可申告ダイアログのデメリット - ユーザはすぐに理解できない難解な許可を求められても許諾しないのでは? -> トラッキングIDを取得するのが困難になる - アプリ開発者がAppleの許諾ポップアップをアプリ内で表示させるチャンスは1度のみ -> ユーザー同意を最適化する必要あり - ユーザーが許諾しない(オプトアウトする)場合、ユーザーのデバイスの広告識別子(トラッキングID)を取得できなくなる <br> ## このトラッキングID許可申告ダイアログはいつからiOS端末に義務化されるのか。 当初はiOS14が発表された9月に導入されるものだったが、「アプリ開発者が対応するために必要な時間を与えるため」**来年2020年の初旬に延期する**ことが発表されている。 多くのアプリ開発者はまだトラッキングID許可申告ダイアログを導入していない。なぜならば、許可を承諾しないユーザーのトラッキングIDを取得できなくなってしまうため。 そのため、義務化されるまでは本番環境で実装すべきではない 詳細は[こちら](https://www.itmedia.co.jp/news/articles/2009/04/news059.html) <br> ## iOS14に対するAdjustの対応 > Adjustの最新iOS SDKバージョン4.23.0は、iOS14をサポートしています。最新版のSDKにアップデートすることで、クライアントのアトリビューションおよび広告計測のサポートがご利用いただけます。 [iOS14向け Adjustの最新 iOS SDKをリリース](https://www.adjust.com/ja/product-updates/adjusts-new-ios-sdk-for-ios-14) <br> ## Adjustが推奨するユーザー同意を確保するための設計方法 以下のリンクの設計方法がとても参考になる。 [iOS14のユーザー同意を確保するためのオプトインの設計方法](https://www.adjust.com/ja/blog/getting-the-opt-in/) ユーザーがラッキングID許可申告ダイアログを見て、承諾してくれるために必要な戦略 1. ユーザーに同意を求めるタイミング 2. 説得力のあるプロンプトを作る 3. 義務化される前に、ユーザーテストとトライアルを繰り返す <br> ## AdjustでiOS14に対応するための技術フロー 以下のリンクにて、技術フローが記載されている。これらの資料を参考に実装できるかと。 - [iOS14 ユーザープライバシーに関するフレームワーク](https://help.adjust.com/ja/article/ios-14-user-privacy-frameworks#Steps-to-support-iOS-14) - [ネイティブadjust™iOS SDKガイド - AppTrackingTransparencyフレームワーク](https://github.com/adjust/ios_sdk/blob/master/doc/japanese/README.md#apptrackingtransparency%E3%83%95%E3%83%AC%E3%83%BC%E3%83%A0%E3%83%AF%E3%83%BC%E3%82%AF) - [iOS14でのIDFA取得](https://qiita.com/yofuru/items/213b88b85553631204e4)

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