In this forum, don't let reality limit your creativity. Feel free to post even your most far-fetched ideas for new technology.
In Europe right now car manufacturers are thinking of installing emergency buttons in all new cars so that in the event of an accident the location of the vehicle can be sent to a distress center. Why not equip mobile phones with a similar "panic' button that can be used in times of crisis? Having an auto distress signal in a car is fine, but what if you're not in your car? The phone could then be a real life saver!