Each week Ross Rubin contributes Switched On, a column about consumer technology.
The Nintendo 3DS stands to democratize stereoscopy in a way society hasn't experienced since the View-Master craze, by offering 3D hardware more affordable than the current crop of televisions and PCs, and without requiring special glasses to see images pop out of the handheld's screen. But when it comes to innovation, the 3DS could represent a two-way street, for even as its 3D screen is focused on enhancing the handheld gaming experience, its "Pass" network technologies -- SpotPass and particularly Stre
