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プラットフォーム別 広告 ID の仕様

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Google Advertising ID

取り方

AdvertisingIdClient | Google APIs for Android | Google Developers

AdvertisingIdClient.Info adInfo = AdvertisingIdClient.getAdvertisingIdInfo(context);
String aaidString = adInfo.getId();

仕様

Format of the Advertising ID - Advertising ID | Android Developers
には

Google Play services APIs expose the user's advertising ID as a string format of UUID

とあり、UUID である事が判る。

Apple Advertising Identifier

取り方

advertisingIdentifier Property - ASIdentifierManager Class Reference

NSUUID *idfa = [ASIdentifierManager sharedManager].advertisingIdentifier;
NSString *idfaString = [idfa UUIDString];

仕様

advertisingIdentifier プロパティが返す NSUUID は、NSUUID Class Reference

UUIDs created by NSUUID conform to RFC 4122 version 4 and are created with random bytes.

とあり、RFC 4122 version 4 に準拠していると明記されている。

Windows Advertising ID

取り方

AdvertisingManager.AdvertisingId | advertisingId Property (Windows)

string advertisingId = Windows.System.UserProfile.AdvertisingManager.AdvertisingId;

仕様

(公開されているもの)は無い。ひどい。

advertisingid lenght - Msdn forums - Tools for Windows Store apps (archived)
現状 32文字の文字列が取得できるが、その文字数という保証はない。

おわりに

いい加減各方面の Advertising ID の頭字語を iAB あたりが決めてくれないかな。

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