Scientists have developed a miniature, ultra-low power injectable biosensor that could be used for continuous, long-term alcohol monitoring. It is powered wirelessly by a wearable device, such as a smartwatch or patch. Breathalysers, currently the most common way to estimate blood alcohol levels, are clunky devices that require patient initiation and are not that accurate, Hall noted. It contains a sensor that is coated with alcohol oxidase, an enzyme that selectively interacts with alcohol to generate a byproduct that can be electrochemically detected. The electrical signals are transmitted wirelessly to a nearby wearable device such as a smartwatch, which also wirelessly powers the chip.

Source: Hindustan Times April 11, 2018 12:33 UTC