UDID或IMEI-哪个更好？

问题描述

在开发需要我唯一识别手机用户的应用程序。我希望它是否最好使用手机的UDID或IMEI一些建议。是否有任何优点/缺点使用两种。所有评论将大大AP preciated

When developing an app that requires me to uniquely identify phone users. I was hoping for some advice on whether it is best to use a phone's UDID or IMEI. Are there any advantages/disadvantages to using either. All comments would be greatly appreciated

推荐答案

ANDROID_ID的优点：

1. Settings.Secure.ANDROID_ID。这是生成并存储在设备第一次启动（ ANDROID_ID 不是在Android 2.2及4.2是唯一的）
64位数量

1. Settings.Secure.ANDROID_ID. This is a 64-bit quantity that is generated and stored when the device first boots (ANDROID_ID is not unique for android 2.2 and from 4.2)

ANDROID_ID的缺点：

1. ANDROID_ID 可以恢复出厂设置改变。

1. ANDROID_ID can change on factory reset.

ANDROID_ID 可空

它可以有根的手机上方便地改变

It can be easily changed on a rooted phone

由几家制造商有几个设备由 ANDROID_ID 错误2.2影响，他们都具有相同的 ANDROID_ID ，即 9774d56d682e549c 。这也是仿真器报告的设备ID相同

Several devices by several manufacturers are affected by the ANDROID_ID bug in 2.2 and all of them have the same ANDROID_ID, which is 9774d56d682e549c. Which is also the same device id reported by the emulator

文件：的

ANDROID_ID 不再是唯一标识设备：http://stackoverflow.com/a/13465373/150016

ANDROID_ID no longer uniquely identifies a device: http://stackoverflow.com/a/13465373/150016

IMEI的赞成

1. 总是独一无二的。

1. IMEI number is always unique.

IMEI的缺点

1. 很多设备没有IMEI号码即三星Galaxy Tab 2

重要链接

• 的

• android device id confusion
• http://android-developers.blogspot.in/2011/03/identifying-app-installations.html
• Is there a unique Android device ID?

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