https://www.reuters.com/article/us-health-coronavirus-japan-ai-technolog/japans-fujitsu-brings-hand-washing-ai-to-covid-19-fight-idUSKBN23Q1F6

Three months after the World Health Organization recommended singing "Happy Birthday" twice during hand washing to fight the coronavirus, Japan's Fujitsu Ltd has developed an artificial intelligence monitor it says will ensure healthcare, hotel and food industry workers scrub properly.