Rumor has it that Sony is looking to the PC games market to help solve its growing piracy problem on the PlayStation 3 — with the introduction of serial keys to its games. According to 'a very reliable source' quoted by PS3-Sense, Sony is attempting to address the recent revelation that it failed to properly secure the private signing key for its flagship console — leading to clever tinkerers producing third-party firmware that allows unofficial software and illegitimately downloaded games to run on unmodified hardware — by looking to the PC retail market for solutions. Unlike the PS3, the PC doesn't have a hardware DRM system built in to it — despite attempts by groups like the Trusted Computing Group, formerly the Trusted Computer Platform Alliance, to introduce such a thing — relying instead on software-based DRM and a surprisingly old-fashioned guarantee of a game's uniqueness: a serial key.