Remember when dual camera modules on smartphones were all the rage? Toshiba is bringing them back -- only this time with technology that you're much more likely to use. Its new module uses two 5-megapixel cameras to record depth and images at the same time, producing a "deep focus" picture where everything is sharp. The technique offers a Lytro-like ability to refocus, even after you've taken the shot; it also provides gesture control and very fast digital autofocusing. You'll have to wait a while before you're snapping deep focus vacation photos, though. Toshiba doesn't expect to mass produce the sensors until April, and finished products will likely come later.