Google is testing a way to activate Assistant without wake words

It’s unclear whether Google has plans to bring the feature, which is codenamed Blue Steel, to the public version of the firmware. It merely appears to be in testing for now. Nor is it completely clear how the feature works. However, Nest devices have ultrasound capabilities that can help them detect how far away you are without activating the camera. 

Whether Google uses ultrasound or the Nest camera’s facial recognition function for Blue Steel, you can turn off those features on the smart display if you’re concerned about your privacy or Assistant picking up something you wouldn’t want it to. It seems there’d be an option to disable just this feature too. 

That said, if you’re comfortable with using Blue Steel, it could make the Assistant experience more frictionless on smart displays. Amazon, meanwhile, has also explored the notion of activating Alexa without a wake word too.

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