OSAKA, Japan—Some people fret over the health implications of potato chips. And then there are those who worry about what they do to touch screens. Cleanliness-obsessed consumers are fed up with soiled fingers gumming up smartphones, computer mice and other electronica. “I used to eat with my hands and lick my fingers when I was small,“ said Tomoki Yoshino, 19 years old. “But one day, my game controller got all greasy, and it was really gross.”...

Source: Wall Street Journal February 03, 2019 18:00 UTC