In 2005 LG Launched the LP-4100 Sobriety phone (Korea only), the main selling point being that it had a in-built breathalyzer.
All owners needed to do was blow on the sensor for the reading to appear on the display. If you are over the limit the display shows a car hitting some cones.
But here is where it really gets cool. The LP4100 also allows you to set up the phone so on certain nights and after a certain time it will restrict you from calling certain people in your phone book. Yes that’s right, it has a ex girlfriend/boyfriend druken call preventor.
This is a bit old but I remembered it when I was posting about the Shaver Phone. This phone would be even better if it gave you the numbers of the nearest taxi company and directions to a kebab shop.