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