This article remembered me a documentary about how Xerox's technicians
   intercepted Communications from Russia's embassy at Cold War...
   [1]http://3dprintingindustry.com/2014/02/04/spies-3d-printer/
   Att,
   - Gutem
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   Registered Linux User: 562142

References

   1. http://3dprintingindustry.com/2014/02/04/spies-3d-printer/