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>Ad firms absolutely do spy, but probably not through the use of microphone audio... mainly because that's way too much information Ultrasonic tracking has bee
by akimbostrawman 2y ago
>Ad firms absolutely do spy, but probably not through the use of microphone audio... mainly because that's way too much information
Ultrasonic tracking has been a thing for a long time
https://www.zdnet.com/article/hundreds-of-apps-are-using-ultrasonic-sounds-to-track-your-ad-habits/ https://www.zdnet.com/article/hundreds-of-apps-are-using-ult...
- wkat4242 2y agoYes but as a result of that coverage it's now very clear when apps use the microphone. That pretty much killed this practice.
- akimbostrawman 2y agofor certain devices such as smartphones, other Smart devices such as TVs are still used for that.
- hellojesus 2y agoHow does it work for tvs in practice? Skimming the article, it seems a large practice was to use the sounds as confirmation of user location (were they at an event). What ultrasonic source is my tv likely to pick up?
- akimbostrawman 2y agoAds can also have ultrasonic signature for example if you listen to an ad on your phone nearby. Ofc it could also just listen to itself
- wkat4242 2y agoI noticed Microsoft teams seems to do something like this. If I walk into a meeting room it tells me the same meeting is on speaker and do I want to mute my laptop.
- wlonkly 2y agoZoom also uses ultrasonic location to identify meeting rooms, but that's when you're already in the Zoom app which is expected to use your microphone or speaker.