Ultrasonic Tracking: Are our phones really listening to us?
Twenty Thousand Hertz
Using a Microphone and Devices to Look at Sound
The technology is also being used at sporting events, music festivals and even the mall. It can listen to what's around you and give that information to advertisers so they can get you to buy stuff. The ability to discern between different tones can be correlated to zeros and ones - which we wouldn't see in the wild.
00:00
Transcript
Play full episode
Remember Everything You Learn from Podcasts
Save insights instantly, chat with episodes, and build lasting knowledge - all powered by AI.
