A monorail train displaying Google signage moves past a billboard advertising Apple iPhone security during the 2019 Consumer Electronics Show (CES) in Las Vegas, Nevada, U.S., on Monday, Jan. 7, 2019.Bloomberg | Bloomberg | Getty ImagesThe long-awaited privacy update to Apple’s iPhone and iPad operating systems that could dramatically hurt mobile advertising is coming in “early spring,” Apple told CNBC on Wednesday.To target mobile ads and measure how effective they are, app developers and other industry players currently often use Apple’s (IDFA), or a string of letters and numbers that’s different on every Apple device. But once this update rolls out, app …
