Each week Ross Rubin contributes Switched On, a column about consumer technology. At Intel's CES 2012 press conference, the giant chipmaker justified calling thin notebook PCs "ultrabooks" by noting how the devices would increasingly be characterized by more than their thinness. The integration of sensors has become so core to the modern smartphone experience that their absence would make using such devices untenable.Most of that differentiation was based on plans to integrate the kinds of sensors that have become commonplace in smartphones and tablets, sensors that can detect location, mo
