title: Get Unique System Identifiers in C#
body: <p>what kind of 'unique' system identifiers can be easily obtained using C# (to hash and then uniquely identify a system)? I could just hash HDD size and things like that but I need to identify and distinguish computers that are all built by the same components so I can't go by that.</p>
  
  <p>Appreciate hints, ideas, sample code!</p>