Many people in Japan have been outraged by a recent trend dubbed "sushi terrorism." Videos across social media show people carrying out all kinds of unhygienic acts, like licking the spoon for a container of green tea powder. Another video, which has more than 98 million views on Twitter, showed a person licking the top of a soy sauce bottle and a teacup's rim before putting them back at a branch of the Sushiro chain. The company said it has replaced all the soy sauce bottles and cleaned every cup at the affected restaurant.
To combat this gross trend, one chain, Kura Sushi, said it would use artificial intelligence to look for "suspicious opening and closing of sushi plate covers," Nikkei Asia reported. The company plans to upgrade existing cameras, used to track the dishes customers take from conveyor belts to determine their bill, by early March. If the system detects suspicious behavior, it will alert employees.
– Mat Smith