I wish to give an alternative. I don’t know if it really answer to ‘a way to uniquely identify any computer’.
However, this method query the Win32_BIOS class in System.Management and return a string with high chances to be unique. (Waiting to be disavowed!!)
/// <summary>
/// BIOS IDentifier
/// </summary>
/// <returns></returns>
public static string BIOS_ID()
{
return GetFirstIdentifier("Win32_BIOS", "Manufacturer")
+ GetFirstIdentifier("Win32_BIOS", "SMBIOSBIOSVersion")
+ GetFirstIdentifier("Win32_BIOS", "IdentificationCode")
+ GetFirstIdentifier("Win32_BIOS", "SerialNumber")
+ GetFirstIdentifier("Win32_BIOS", "ReleaseDate")
+ GetFirstIdentifier("Win32_BIOS", "Version");
}
/// <summary>
/// ManagementClass used to read the first specific properties
/// </summary>
/// <param name="wmiClass">Object Class to query</param>
/// <param name="wmiProperty">Property to get info</param>
/// <returns></returns>
private static string GetFirstIdentifier(string wmiClass, string wmiProperty)
{
string result = string.Empty;
ManagementClass mc = new System.Management.ManagementClass(wmiClass);
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject mo in moc)
{
//Only get the first one
if (string.IsNullOrEmpty(result))
{
try
{
if (mo[wmiProperty] != null) result = mo[wmiProperty].ToString();
break;
}
catch
{
}
}
}
return result.Trim();
}