It's time smart assistants evolved beyond fixed wake words like "Hey Google"

We've been talking to Alexa, Siri, Bixby, and Google for years now. All four assistants have gotten much smarter at understanding and processing data, except when it comes to knowing when you're talking to it.

source https://www.androidcentral.com/accessories/smart-home/its-time-smart-assistants-evolved-beyond-fixed-wake-words-like-hey-google