From Elon Musk and Kylie Jenner to Chinese authorities, online flight tracking sparks anger How to upset Russian shipping companies, Elon Musk, Chinese authorities and TV celebrity Kylie Jenner? Tracking your planes. Websites and Twitter accounts track flights and offer real-time information on air traffic – and, sometimes, are the source of important news such as Nancy Pelosi’s trip to Taiwan – but that exposure generates everything from complaints to the request for seizures of equipment. Every year Dan Streufert, founder of the ADS-B Exchange website, is asked by Russian air transport companies or Saudi aircraft owners, among other personalities,...