Have you ever sat in a movie theater, and heard someone's cell phone ring, even after the repeated "Please silence your cell phone" messages that are now played before the movie? To make matters worse,have you ever sat in a movie theater, and after you heard the cell phone ring, the person actually answered it and carried on a conversation right there during the movie?
This is a major pet peeve of mine as I'm sure it is yours, but there may be hope beyond just thinking people will one day have a little respect.
It's a lip reading cell phone that is currently under development that will make "silent communication" possible by you simply moving your lips to the words you would normally speak out loud.
Not a lot of information is being given out as to how it all works yet since it is still in development, and all of the wires connected to a person's lips as shown on the Karlsruhe Institute of Technology website don't make it look very appealing, but all of those wires are simply for demo purposes as the technology is further developed.
Cell Phones Without Plans
Cell Phone Covers