你好，
首先要明确“唯一标识”指的信息，一台PC本身并没有这个“唯一标识”。但是PC的CPU的ID，网卡的MAC地址，硬盘的ID等等。这些都是唯一的。我们可以选择这些内容之一作为PC的“唯一标识”。并且推荐你使用MAC地址作为唯一标识。这里我给一些代码关于获取网卡MAC地址，参考：PhysicalAddress
Class
public static void ShowNetworkInterfaces()
{
IPGlobalProperties computerProperties = IPGlobalProperties.GetIPGlobalProperties();
NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces();
Console.WriteLine("Interface information for {0}.{1} ",
computerProperties.HostName, computerProperties.DomainName);
if (nics == null || nics.Length < 1)
{
Console.WriteLine(" No network interfaces found.");
return;
}
Console.WriteLine(" Number of interfaces .................... : {0}", nics.Length);
foreach (NetworkInterface adapter in nics)
{
IPInterfaceProperties properties = adapter.GetIPProperties(); // .GetIPInterfaceProperties();
Console.WriteLine();
Console.WriteLine(adapter.Description);
Console.WriteLine(String.Empty.PadLeft(adapter.Description.Length,'='));
Console.WriteLine(" Interface type .......................... : {0}", adapter.NetworkInterfaceType);
Console.Write(" Physical address ........................ : ");
PhysicalAddress address = adapter.GetPhysicalAddress();
byte[] bytes = address.GetAddressBytes();
for(int i = 0; i< bytes.Length; i++)
{
// Display the physical address in hexadecimal.
Console.Write("{0}", bytes[i].ToString("X2"));
// Insert a hyphen after each byte, unless we are at the end of the
// address.
if (i != bytes.Length -1)
{
Console.Write("-");
}
}
Console.WriteLine();
}
}
上述代码会列出PC上所有网卡的MAC地址，例如虚拟网卡，无线网卡等。
如果PAD是基于Windows系统，并且安装有.NET Framework，也可以通过上述方式获取MAC地址。
参考信息：
Is there really any way to uniquely identify any computer at all
Get unique machine id
谢谢！
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