But drink a little too much and you could be in trouble. Japan's Tanita, a maker of health equipment, has produced a portable device that measures your blood-alcohol level in seconds. The device is appropriately named Dr. Bacchus, after the Greek god of wine.
Drinkers just blow into the sensor.
A picture of a full wine glass means you can have another round, an empty glass means you've had enough. He stresses that the device is designed for health purposes and not as a breathalyzer to prevent drunk driving. Dr. Bacchus also has an alarm that can be set to ring to prevent you from oversleeping on the train and missing your stop. The device sells under the brand name Alcohol Sensor in Europe but isn't on sale in the United States. Every second counts in an emergency.