How does Android's 'Always Listening' feature to detect
To change Google Now command from OK Google to something else you will have to download and install an app which will further let you change Google Now Command. In this process you don't need any kind of Root Permission so this process can be applied to any Android Device running on Android version 4.1+ because Google Now can't work on Android version below 4.1. How to Use Voice Search and Google Now in Chrome Apr 13, 2020 Build your own Raspberry Pi Google Assistant - Pi My Life Up
Google now listens for your voice in Chrome beta | PCWorld
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