2 chapters across the catalog
Facebook has filed a patent for ultrasonic cross-device tracking, which uses high-frequency tones in TV ads to activate a phone's microphone. In mobile news, the Nokia 8110 "banana phone" is discussed; however, the host expresses disappointment that Google has invested $22 million in its KaiOS operating system. This investment is seen as a move to bring data-tracking apps like YouTube and Maps to simple feature phones.
Ultrasonic Cross-Device Tracking and LISNR Technology
The technology company LISNR has developed "Smart Tones," which are ultrasonic sounds inaudible to humans but detectable by mobile phone microphones. These tones can be embedded in television commercials, stadium PA systems, or web pages to track user behavior across devices without requiring Bluetooth or Wi-Fi. Intel Capital has invested in the technology, which is being integrated into various apps for proximity-based marketing and audience synchronization.
