Will there be a unique and unchanging device id that apps have access to? (Windows Phone 7)

Question

I’m writing a Windows Phone 7 app and am looking for a way to get a unique and unchanging device Id that I can use to identify the device and therefore the user (since Microsoft doesn’t give you access to the users Windows Live Id). Anyone know if this is going to be possible? Especially interested to find out if the id will be a) unique and b) unchanging.

Thanks,

Answer 1

There is an anonymous live ID (ANID) rather than having direct access to the windows live ID. There is also a unique device ID. Further detail and code samples here for your reference.

UserExtendedProperties.GetValue Method (Microsoft.Phone.Info)

Device Information for Windows Phone

Answer 2

http://msdn.microsoft.com/en-us/library/ff941122%28v=VS.92%29.aspx

DeviceUniqueId Poperty. One Windows Live ID can be associate with 5 devices, some can sell the phone etc. If you really want to know If John XYZ has logged in you need to implement it on your own way.

I can imagine an app that start page is a web broswer control and user log into (you can use Windows Live ID service), you get the info who is he.