Ever get the shakes sending out an angry text message? You'd better be careful if you buy a BlackBerry in the future, as RIM is trying for a patent that would telegraph all that wrath to the recipient on the other end. The technique uses a myriad of sensors, like an accelerometer, front camera or pressure sensor, to gauge just how emotional a smartphone owner might be and convey that through livelier messaging styles. Get flustered and that BlackBerry Messenger font gets big, bold and red; mellow out with a smile, and the conversation text becomes almost cuddly. Whether or not the patent is granted, let alone used, is very much an unknown. We have a hunch that RIM would rather not make BlackBerry users keep a poker face.