在VS2012 Windows 8 Store Apps中获取唯一的设备ID

Question

I am new to Windows 8 Store Apps, and need to fetch device ID in one of my XAML project. And this device ID should be unique. I searched the internet and came across 2 different ways.

First way in C# code,

private string GetHardwareId()
{
    var token = HardwareIdentification.GetPackageSpecificToken(null);
    var hardwareId = token.Id;
    var dataReader = Windows.Storage.Streams.DataReader.FromBuffer(hardwareId);

    byte[] bytes = new byte[hardwareId.Length];
    dataReader.ReadBytes(bytes);

    return BitConverter.ToString(bytes);
} 

Second way in C# code,

var easClientDeviceInformation = new Windows.Security.ExchangeActiveSyncProvisioning.EasClientDeviceInformation()
GUID deviceId = easClientDeviceInformation.Id;

The first one gives in bits format whereas second one gives GUID. I am not getting any idea that which is correct one.

I referred this blog

And MSDN link too.

Can any one guide me regarding which can be used as Device ID?

Answer 1

I had same confusion, but finally used HardwareIdentification.GetPackageSpecificToken . Because I find no information about uniqueness of EasClientDeviceInformation.ID

However, you can't use ID returned by HardwareIdentification.GetPackageSpecificToken as it is, because it depends upon many hardware components. And if any one of them changed, a different id will be returned.

There is more information at this link .

Answer 2

In VS2013, Microsoft uses the following method to retrieve the unique "installation id" or "device id" for the current device when uploading a channel URI retrieved from the Microsoft Push Notification Server (MPNS) to implement Push Notification:

var token = Windows.System.Profile.HardwareIdentification.GetPackageSpecificToken(null);
string installationId = Windows.Security.Cryptography.CryptographicBuffer.EncodeToBase64String(token.Id);