Sony hints at PSP hard drive

Sony CEO Jack Tretton has hinted that a future hard drive may be a possibility for its PlayStation Portable handheld.

During a reporters' briefing, Tretton was asked about the introduction of internal storage in future revisions of the PSP.

Responding to the question, the Sony boss hinted that internal storage could be on the horizon, stating: "I think that's the trend moving forward."

Tretton also admitted the UMD movie format on the PlayStation Portable has not performed well. He told reporters: "I think the UMD has struggled, and that's an understatement. That's been a very frustrating thing. I don't think UMD movies were handled very effectively."