"A device and method for protection of legitimate software against used software and counterfeit software in recording media
A specific title code is read, and if this title code has been registered, the main unit shifts to a normal operation. If the code has not been registered, verification software is initiated
If matching does not occur, the disk is processed as illegitimate software
Since only titles for which legitimate software has actually been purchased and which have been initially registered in the machine table can be used, resale (so-called used software purchase) after purchase by an end-user becomes practically impossible."