standards for RYF certification}, and among them is a pristine example of

  CCS\@.}, a few electronics products on the market meet

a higher standard of copyleft compliance.  As such, for the first

time in the history of copyleft, CCS experts have pristine examples to study

and present as exemplars worthy of emulation.

This case study therefore examines the entire life-cycle of a GPL compliance

investigation: from product purchase, to source request, to CCS review, and concluding

in a final compliance determination.

Specifically, this chapter discusses the purchase, CCS provision, and a

step-by-step build and installation analysis of a specific, physical,

embedded electronics product:

  ``TPE-NWIFIROUTER'' wireless router by ThinkPenguin}.\footnote{The FSF of

  course performed a thorough CCS check as part of its certification process.

  The analysis discussed herein was independently performed by Software

  Freedom Conservancy without reviewing the FSF's findings.  Thus, this

  analysis is ``true to form'', and explains the typical procedures Conservancy

  uses when investigating a potential GPL violation.  In this case, obviously, no

  violation was uncovered.}

\section{Consumer Purchase and Unboxing}

The process for copyleft compliance investigation, when properly conducted,

determines whether users inclined to exercise their rights under a copyleft