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During a call, the cell phone uses vibrations from the microphone to encode speech pattern in ambient signals for sending voice data. To receive the audio signals, it converts encoded radio signals to sound vibrations, which are picked up by the speaker.Metros
Suspicious radio signals intercepted around city

Areas where these signals were received are within 25-30 km radius of Kolkata.

22 Nov 2018 12:43 AM IST

In the bigger picture, it can be implemented in metropolitan areas without the need for new infrastructure requirements, as theres no dearth of radio waves in such places. (Image: Pixabay)Technology
IoT devices to use radio signals from your mobile phone

The ultra-wideband backscatter communication process by Disney Research can help cheaper implementation of IoT...

8 May 2017 4:19 PM IST

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