SEOUL, South Korea - Like many K-pop fans around the world, Yuroy Wang, a 22-year-old retail worker in Taipei, Taiwan, loves Korean culture but doesn't speak the language. So when he went last fall to a touring production of “The Second Chance Convenience Store,” a play based on a Korean novel that was a bestseller in Taiwan, he expected to follow the dialogue via supertitles. Instead, he was offered a more high-tech alternative: a pair of artificial intelligence-powered glasses.