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UDID、IDFV、IDFA、UUID 的区别

2019-06-15  本文已影响0人  灯泡虫

UDID (Unique Device Identifier)

iOS设备的唯一识别码,它由40位16进制数的字母和数字组成,除了越狱,没什么办法可以改变它

IDFV (IdentifierForVendor)

Normally, the vendor is determined by data provided by the App Store.
If the app was not installed from the app store (such as enterprise apps and apps still in development), then a vendor identifier is calculated based on the app’s bundle ID.
The bundle ID is assumed to be in reverse-DNS format.

IDFA (IdentifierForIdentifier)

广告标示符,在同一个设备上的所有App都会取到相同的值,是苹果专门给各广告提供商用来追踪用户而设的

UUID (Universally Unique Identifier)

通用唯一识别码(伪唯一),但是因为UUID随机数算法得到的数重复概率为170亿分之一,几乎可以保证每次随机出来的值都是唯一的

唯一ID

可以通过UUID + Keychain的方式来得到唯一值

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