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Researchers at Laval University are developing an optical breathalyzer that can be integrated into the screen of a mobile device. This technology could provide an accessible, inexpensive way to check blood alcohol content (BAC) and reduce alcohol-related accidents and deaths.
The technology works by measuring the evaporation rate of the fog that is produced when the user breathes on the phone screen. Since alcohol evaporates faster than water, the higher the alcohol content in the breath, the quicker the evaporation rate.
The researchers used components that are already built into smartphones to create the optical breathalyzer. The phone’s display serves as the light source, and the dense stress layer of glass over the…READ MORE