Do you talk to your digital camera? Perhaps stroke its glossy LCD? If a pair of recent patent applications are any indication, those mildly creepy gestures might one day actually do something. Sony's just laid claim to a DSLR touchscreen that can be manipulated by thumb even while the rest of one's face is smushed up against the viewfinder, and Canon's got its eye on technology that lets shooters activate advanced camera functions using simple voice control. The latter wouldn't be limited to "fire," but could potentia
