Hundreds of Apps Can Listen for Marketing ‘Beacons’ You Can’t Hear Ifeadi C. 04:12 WIRED, Zero Tech Blog So-called ultrasonic beacons are becoming even more popular with marketers. Here's how to shut them out. The post Hundreds of Apps Can Listen for Marketing ‘Beacons’ You Can’t Hear appeared first on WIRED. via Zero Tech Blog Share this Share on FacebookTweet on TwitterPlus on Google+ Related PostsIntel’s Plan to Thunderbolt 3 All of the ThingsAn Up-Close Look at the Notorious APT32 Hacking Group in ActionThe Story of Arc Symphony, a Game About a Game That Doesn’t ExistEnjoy the Early-’00s Nostalgia Wave—It Might Be the Last RevivalGoogle’s AlphaGo Levels Up From Board Games to Power GridsGarmin’s New 360 Cam Makes Your Stupid Stunts Spherical