You can take the serial number of the CPU.
String cpuinfo = ""; // CPU serial number
ManagementClass Cimobject = New
ManagementClass ("Win32_Processor");
ManagementObjectCollection moc = CimObject.getinstances ();
Foreach (ManagementObject Mo in MoC)
{
CPUINFO = mo.properties ["processorid"]. value.tostring ();
Response.write (cpuinfo);
}
