Yakult carts for fine dust checking

A salesperson of Korea Yakult, right, demonstrates a fine dust measuring device installed on her cart, while a model of SK Telecom shows the screen of a mobile app displaying current fine dust levels. The top mobile carrier will release a fine dust mapping service, dubbed “everyair,” Wednesday, in cooperation with Korea Yakult and household air purifier maker Winix. The three firms plan to increase the number of fine dust measuring devices to 150,000 including those to be installed in 10,000 Yakult carts by the end of next year. / Courtesy of SK Telecom