New "Mind Reader" patent application uses unvocalized words to express unvocalized thoughts.
Public can use this disclosure for further innovation/brainstorming/etc. -http://www.google.com/patents/WO2013166377A1?cl=en
You can also brainstorm from the "prior art" patents/applications, too, to make a "new and better device" than that disclosed. Have fun!
"Coupling an electronic skin tattoo to a mobile communication device....A system and method provides auxiliary voice input to a mobile communication device (MCD). The system comprises an electronic skin tattoo (110) capable of being applied to a throat region of a body. The electronic skin tattoo can include an embedded microphone (103); a transceiver for enabling wireless communication with the MCD; and a power supply (104) configured to receive energizing signals from a personal area network associated with the MCD. A controller (101) is communicatively coupled to the power supply. The controller can be configured to receive a signal from the MCD to initiate reception of an audio stream picked up from the throat region of the body for subsequent audio detection by the MCD under an improved signal-to-noise ratio than without the employment of the electronic skin tattoo."