With the popularity of PSPs with modded firmware, it's only a natural concern for Sony that its games might be pirated. Sony's answer to this is to have each player register online – not unlike some PC game titles that are attached to services like Steam.
SOCOM Fireteam Bravo 3 for the PSP, which will ship on a UMD, requires gamers to register on the PlayStation Network using an included voucher. While those who buy this new will have the registration voucher included at no extra cost, those who pick up the UMD on the used market will have to pay $20 for the entitlement on PSN.
John Koller, director of hardware marketing at SCEA, said in an IGN interview, "Today's consumers are more tech savvy and better connected to the internet than ever before. Piracy continues to be an issue of concern for the PSP platform. SOCOM: U.S. Navy SEALs Fireteam Bravo 3 is a trial run for a new initiative we are exploring for the platform. We will continue to explore this as an opportunity for the platform going forward, but we have no announcements to make on future iterations at this time."
This system would directly combat piracy as well as drive some used-sale revenue to Sony. The downside to this, of course, it that it will greatly diminish the resale value of the game for the original owners. Given that a new copy sells for $37, this already creates a $17 ceiling for the sale of a used copy.