blocks|key|643834|text|使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|643835|NSString*+uniqueIdentifier+=+[[[UIDevice+currentDevice]+identifierForVendor]+UUIDString];+
NSLog(@"UDID::+%25@",+uniqueIdentifier);|code-block|syntax|javascript|643836|你必须放一个小箱子来检查这个应用程序是否运行在模拟器或设备上。|643837|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Use

<pre><code>NSString* uniqueIdentifier = [[[UIDevice currentDevice] identifierForVendor] UUIDString]; 
NSLog(@"UDID:: %@", uniqueIdentifier);
</code></pre>

You've to put a small case to check the app is running on simulator or on device.

blocks|key|642245|text|您无法再获得唯一的设备ID。"identifierForVendor“是你能得到的最好的。苹果已经系统地禁用了识别特定设备的功能。|type|blockquote|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|642246|但是，在每次安装应用程序之后，"identifierForVendor“值也会发生变化。|unstyled|642247|有关更多信息，参观。|642248|你也把我和这行“用户可见”搞混了，能不能请你说得更具体些？|642249|还有一种方法--使用icloud工具包，您可以获得当前登录icloud用户帐户的唯一令牌。这对于设备上的每个应用程序来说都是唯一的。|642250|似乎你想用、唯一ID、或、UDID、来跟踪用户，苹果不喜欢这样，所以在继续前进之前，请参观。|642251|更新：|642252|如果苹果阻止使用唯一的Id跟踪用户，那么你就不应该使用它了。|642253|您只需要在服务器上验证用户。最好的解决方案是iCloud令牌，|642254|获取它并将其存储在用户默认值或密钥链中，并在任何您想使用的地方使用。|642255|通过这种方式，您还可以跟踪不同设备上的单个用户，如果他/她使用的是具有相同iCloud帐户的多个设备。|642256|entityMap|0|LINK|mutability|MUTABLE|url|https://gist.github.com/hujunfeng/6265995|1|http://arstechnica.com/apple/2013/03/apple-forcing-developers-to-ditch-unique-device-ids/^0|F|J|0|G|J|0|7|2|0|0|0|0|5|6|C|6|17|2|1|0|0|3|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1A|8|@$9|1B|A|1C|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|1D|8|@$9|1E|A|1F|B|C]]|D|@]|E|$]]|$1|I|3|J|5|H|7|1G|8|@]|D|@$9|1H|A|1I|1|1J]]|E|$]]|$1|K|3|L|5|H|7|1K|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|1L|8|@]|D|@]|E|$]]|$1|O|3|P|5|H|7|1M|8|@$9|1N|A|1O|B|C]|$9|1P|A|1Q|B|C]]|D|@$9|1R|A|1S|1|1T]]|E|$]]|$1|Q|3|R|5|H|7|1U|8|@$9|1V|A|1W|B|C]]|D|@]|E|$]]|$1|S|3|T|5|H|7|1X|8|@]|D|@]|E|$]]|$1|U|3|V|5|H|7|1Y|8|@]|D|@]|E|$]]|$1|W|3|X|5|H|7|1Z|8|@]|D|@]|E|$]]|$1|Y|3|Z|5|H|7|20|8|@]|D|@]|E|$]]|$1|10|3|-4|5|H|7|21|8|@]|D|@]|E|$]]]|11|$12|$5|13|14|15|E|$16|17]]|18|$5|13|14|15|E|$16|19]]]]

<blockquote>
 You can no longer get a unique ID of device. "identifierForVendor"
 is the best you're going to get. Apple has systematically disabled
 identifying a specific device.
</blockquote>

Though, "identifierForVendor" value also changed after every new installation of application.

for more info <a href="https://gist.github.com/hujunfeng/6265995" rel="nofollow">visit</a>.

You're also confusing me with this line "visible to user", could you please be more specific about it?

There's also one more way - Using icloud kit you can get a unique token of currently logged In icloud user account. This is unique per application on device.

It seems you want to track user using unique ID or UDID and Apple doesn't like this so before moving forward please <a href="http://arstechnica.com/apple/2013/03/apple-forcing-developers-to-ditch-unique-device-ids/" rel="nofollow">visit</a>.

Update:

If Apple is preventing tracking users using Unique Id, you shouldn't be using it then.

You simply want to validate user on your server. The best solution for you is iCloud token, 

Fetch it and store it in User defaults or Keychain and use anywhere you want.

In this way you can also track single user on different devices if he/she is using multiple devices with same iCloud account.

blocks|key|642273|text|您可以尝试通过服务http://get.udid.io获得设备的UDID，然后在服务器上验证此设备。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|642274|但是在此之后，您需要在应用程序中获得相同的UDID才能将其传递给服务器.可以通过特定的URL模式将UDID传递给app。|642275|你觉得这个主意怎么样？如果你喜欢，我可以分享更多的细节。|642276|entityMap|0|LINK|mutability|MUTABLE|url|http://get.udid.io/^0|9|I|0|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|U|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]]]

You can try obtain UDID of device via service <a href="http://get.udid.io" rel="nofollow">http://get.udid.io</a> and then authenticate this device on your server. 

But after this you will need to obtain the same UDID in your apps to pass it to server... It is possible to pass UDID to app via specific URL schema.

What do you think about this idea? I can share more details if you like it.

I went through almost all the related SO questions, googled lot, but I can't get help.

There are lot many posts and SO answers which states to use <code>[UIDevice identifierForVendor]</code>, but as this Id is not visible to user, I want different way to uniquely identify the device.

Basically I am developing Enterprise app which will not going to App Store(no need to worry about private APIs).
I am having server which has all users details including device id(don't know what to use as device id) already entered.

When device launches app, web service will be called and it needs to send device id to authenticate the device.

That's why I need device id which will be visible to user as well as programmer.

Any help is appreciated!!!

Update 
'Visible to user' means user can see this unique id before installing app, so as he/she can send this number to admin to register it on server.

If this unique id is registered on server then and then only access will be given to application, otherwise app will not connect to server.

Unique identifier for device which can be visible for both user and programmer iOS 8?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我浏览了几乎所有相关的问题，谷歌了很多，但我找不到帮助。有很多帖子，所以答案都是使用[UIDevice identifierForVendor]的，但是由于这个Id对用户来说是不可见的，所以我想要不同的方式来唯一地识别设备。基本上，我正在开发企业应用程序，它不会去APIs(不需要担心私有API)。我的服务器已经输入了所...

问设备的唯一标识符，用户和程序员都可以看到iOS 8吗？
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问设备的唯一标识符，用户和程序员都可以看到iOS 8吗？EN