New York (CNN Business) It appears no one realized Google's Nest Guard home security device has a built-in microphone. Google Assistant would roll out to Nest Guard so users can ask it for information like the weather or traffic. The blog post acknowledged the gadget has one microphone -- news that was not made clear to users. The blog post acknowledged the gadget has one microphone -- news that was not made clear to users. Google previously did not disclose the microphone's existence in any of its product descriptions but said it wasn't a "secret."

Source: CNN February 20, 2019 18:56 UTC