Anyone invited into your home may be able to interact with your Google connected home devices and services. For example, anyone in your home, including a guest, may be able to activate the speaker and display devices in your home by saying, "Ok Google", “Hey Google” or using a different activation method such as long press on your device. To better understand how Google protects your privacy when you use our connected home devices and services, continue reading below and read the Google Nest privacy FAQs. You can also find out more about Google Assistant and your privacy.
Visibility of guest interactions
When someone other than the person who set up the Google connected home device interacts with the device, for example via the Assistant, and the device does not recognise their voice, their communication history is stored in the activity history of the Google account used to set up the device. You can access this history at myactivity.google.com. If you allow guests to use your device, make sure that they understand that their interactions will be stored by Google in your Google account and that you can view and delete that information. When you have guests in your home, you may consider muting the microphone or unplugging and putting the device away.
If you’re using a Google Nest Wifi or a Google Wifi device, note that when guests use your Wi-Fi network, some of their information (such as IP and MAC addresses and usage data) can be seen through your Wifi or Home app, as applicable, and is associated with your account.
Limiting guests' ability to access your information
If you do not set up multi-user functionality on your device so that your speaker or display can recognise your voice (that is, by setting up Voice Match on the device), anyone in your home can ask about information that you have made available to your device when they interact with it. Additionally, if your device’s multi-user functionality mistakes a recording of your voice or someone else's voice as you, your device may convey your information to that user.
To prevent others from accessing private information like reminders and calendar entries from your device, you can turn off Personal results in the Google Home app. This can be set device by device, so you can give a device in your bedroom different access to your information from a device in your kitchen.