Using Ultrasonic Beacons to Track Users (Schneier on Security)

2017-05-08 14:16

I've previously written about ad networks using ultrasonic communications to jump from one device to another. The idea is for devices like televisions to play ultrasonic codes in advertisements and for nearby smartphones to detect them. This way the two devices can be linked. Creepy, yes. And also increasingly common, as this research demonstrates: Privacy Threats through Ultrasonic Side Channels...

News URL

https://www.schneier.com/blog/archives/2017/05/using_ultrasoni.html

#security #ultrasonic