The research engineers at National California's Institute of Biomedical Imaging and Bioengineering created an experimental tattoo that if you drink too much sends a warning message to your cell phone to prevent you from driving.
This is a temporary one tattoo containing a sensor that detects alcohol levels in and through your sweat bluetooth alerts your smartphone when you have exceeded the upper alcohol levels.
Sheila Selimovic (Seila Selimovic), Ph.D. and director of the National Institute of Biomedical Imaging and Biomechanical Program, said:
"It looks like a temporary tattoo, but it 's actually a biosensor with a fairly flexible wireless device built into it. An ingredient releases a chemical that stimulates sweat on the skin under the tattoo. "Another component detects changes in the electrical current that flows through the sweat produced, which measures alcohol levels and sends them to the user's cell phone."
Measuring alcohol from sweat isn't new technology, but the speed at which this new device sends signals to your smartphone (about every eight minutes) is vastly superior to two or three hours taken by her predecessors.