Each week Ross Rubin contributes Switched On, a column about consumer technology.
Just as Windows Phone 7's "touch-only" interface threw away the past to create a streamlined, more approachable experience, Microsoft is creating a "touch-first" experience for Windows 8 that has more in common with its new phone software than previous versions of Windows. This "Metro-style" UI will be able to run on virtually any modern PC, with screens from 10- to 30-inches and above. The touch interface will be only occasionally relevant on desktops, though, more so on laptops. Where it's obviously meant to shine is on
