Your smartphone may be able to tell you when you're drunk
https://edition.cnn.com/2020/08/18/health/smart-phone-alcohol-measure-intl-scli-scn-wellness/index.html
It's often the case with those who drink too much alcohol that they don't notice how much they have drunk until someone tells them.
It shows the risk that people may drink infinitely, if they drink alone. So, the app may contribute to notifying them how much they have drunk.
