You can adjust the eye gaze sensitivity, while looking upwards snoozes the app. Google says that all Look to Speak data is private and stays on device.
There has been other work into helping people with speech and motor impairments use eye tracking to communicate. Microsoft has worked on a smartphone-based system called GazeSpeak while a video that explains Look to Speak shows a person crafting a message using their gaze and an on-screen keyboard.
Look To Speak is part of the Start with One project under the Experiments with Google umbrella. Recent experiments on that platform include a never-ending music video app filled with covers of Billie Eilish’s “Bad Guy.”
