From what is known so far, ‘Quick phrases’ feature will essentially skip the necessity for a wake word to alert Google Assistant (Hey Google or Ok Google) and prepare it to carry out the command. The software lists around 20 commands that will work without a wake word. You will be able to pick top commands from this list based on your preference.
The list includes orders related to setting up and canceling alarms, asking about the time and weather, operating smart lights, controlling music, and communication tools like the phone and message broadcasting.
To keep the quick phrases under your control, Google Assistant will rely on the Voice Match vocal identification tool. Simply put, this means that Google will identify and respond to only your voice. Other users/voices cannot give ‘Quick phrase’ commands to your assistant.
Although Google has not rolled out any official statement yet, there are a lot of concerns among users regarding privacy infringement. The question concerning Google Assistant users is: Will Google Assistant be listening all the time?