Sony is adding a digital reader service that will allow owners of its handheld gaming system, the PlayStation Portable, to download comics. The service will start in December and will include content from Marvel Entertainment's Spider-Man, X-Men and the Fantastic Four. Users will be able to read classic and new comics page by page or frame by frame. Sony says PSP owners will be able to access a range of media through the digital reader service, but it gave no further details. Sony did not announce prices Tuesday. The service will initally be available through the PlayStation Stores serving the United States, the United Kingdom, Ireland, Australia, New Zealand and South Africa.