Location technology is getting better and better … and ultra-wideband could soon make it easier to unlock doors, turn on smart devices and even limit the need for passwords. But first the companies developing this technology need to get over privacy hurdles. WSJ Tech Columnist Christopher Mims speaks with Tech News Briefing’s Julie Chang about how UWB could reshape how we interact with our devices. Zoe Thomas hosts. Learn more about your ad choices. Visit megaphone.fm/adchoices