Unique identifier for an iPhone app, NOT device

Question

I want to avoid user registration in my app, and to identity my user by purchased app. If someone purchase app on his iPhone, and with the same Apple ID download this app on other device, I want to use the same settings and content on this devices.

Is posible to use identifiers like AppleID (without entering in input field by user)?

I found similar question but UniqueIdentifier is unique only for physical device, not for user.

score 1 · Accepted Answer · answered Aug 01 '11 at 18:15

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No. Apple does not give an app access to the user's Apple ID without the user's involvement. And for good reason.

answered Aug 01 '11 at 18:15

onnoweb

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Also adding that iCloud is a sensible solution for this. – August Lilleaas Aug 01 '11 at 18:17
I completely understand problem with apple here, and this is right decision. Maybe some other unique identifier like AppleId who can be used to identify purchased app? – dormitkon Aug 01 '11 at 18:22

score 0 · Answer 2 · answered Aug 01 '11 at 18:36

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I don't think you should outsmart the user. You can't assert that the user will want the same settings on another device. For instance I manage all my family iphones and download apps for them, all of them have their own accounts in apps and like different preferences. That's why it's the best to allow users to create accounts and sing in. This way user has a clear understanding what he/she is doing.

answered Aug 01 '11 at 18:36

Cyprian

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It's not about settings, it's about user/pass, because I want to avoid registration, I want to make automatic login on every device (with the same apple id). – dormitkon Aug 05 '11 at 12:21

Unique identifier for an iPhone app, NOT device

2 Answers2