Scientists have developed a wearable skin tattoo that detects alcohol levels in sweat and transmits the information to a smartphone, allowing users to monitor their drinking in real time. The device could help reduce unsafe drinking that can lead to vehicle crashes, violence and the degeneration of the health of heavy drinkers.
Resembling a temporary tattoo, the device is actually a biosensor patch that is embedded with several flexible wireless components. While one component releases a chemical that stimulates perspiration on the skin below the patch, another senses changes in electrical current flowing through the generated sweat, and measures alcohol levels and sends them to the user's cell phone.
