To review and delete your Nest Cam video history or individual saved clips from your Nest Cam, follow the instructions [here](https://nest.com/support/article/Can-I-delete-my-Nest-Cam-Video-History).

Yes, but only as part of the Face Match setup process, and not after you've completed setup.

When you set up Face Match on your Nest Hub Max, you use your phone to capture several photos that are combined to create a unique model of your face. These photos are sent to Google, and you can review or delete them anytime by visiting [My Activity](https://myactivity.google.com/myactivity). After this setup process, Face Match does not send any video or images to Google. And Quick Gestures does not require sending any video or images to Google at all. In addition, we keep the video and images that power these features separate from advertising and don’t use them for ad personalization.

One example of this is we may offer the option to share video clips from Nest Cam with your home security service, so they can help keep your home safe.

Also, remember you can use your device’s camera with other Google services (such as uploading a video to YouTube or making a video call with Google Duo) -- and when you do this, Google’s [Privacy Policy](https://policies.google.com/privacy?hl=en-US) will apply.

You can review and delete stored audio recordings either through the Nest app (in the case of Nest Cam recordings) or [My Activity](https://myactivity.google.com/myactivity) (for interactions with the Google Assistant).

We keep your audio recordings separate from advertising and don’t use them for ad personalization — but when you interact with your Assistant by voice, we may use the text of those interactions to inform your interests for ad personalization. You can always review your Google settings to control the [ads you see](https://support.google.com/accounts/answer/2662856), including opting out of ad personalization completely. Learn more about the Google Assistant and the choices available to you [here](http://myaccount.google.com/yourdata/assistant).

One example of this is we may offer the option to share audio clips from Nest Cam with your home security service, so they can help keep your home safe.

Our devices include environmental and activity sensors that detect information about your home’s environment and what’s happening in it, such as motion, whether or not someone is home, ambient light, temperature, and humidity. Data from these sensors, which is regularly sent to Google, serves a variety of purposes, such as helping your home take better care of you, helping us make your devices and services better, and keeping you informed. For example:

• The temperature and humidity sensors in your Nest Learning Thermostat help keep your home comfortable while saving energy

• Home/Away Assist uses activity sensors across multiple Nest devices in your home to automatically switch the behavior of Nest devices in your home when you leave and when you come back

• We used ambient light and temperature sensor data aggregated from thermostats across our customers to determine that direct sunlight can cause thermostats to think it’s warmer than it actually is, so we introduced [Sunblock](https://nest.com/support/article/What-is-Sunblock), a new feature, to help your thermostat adjust for this so it sets the correct temperature

• We use sensor data to help us troubleshoot and improve the performance, safety, and reliability of our devices and services — for example, we use temperature and humidity data from our devices to measure the impact of environmental conditions on battery life

• We may also use sensor data to keep you informed of updates on Google services, including connected home services we think may interest you, such as energy and home safety programs — but we’ll always respect your choice about whether or not you want to receive promotional emails from Google

We do not use environmental and activity sensor data for ad personalization. (Remember that to fulfill some requests related to your connected home devices -- for example, “Hey Google, what’s the temperature inside?”— your Assistant can retrieve a sensor reading. Learn more about the Google Assistant and the choices available to you [here](http://myaccount.google.com/yourdata/assistant) ).

When you delete your account, this sensor data is deleted from our servers as explained in our [retention policy](https://policies.google.com/technologies/retention?hl=en-US).

One example of this is you can choose to share data with utility companies in order to benefit from energy savings programs and services like [Rush Hour Rewards](https://nest.com/support/article/What-is-Rush-Hour-Rewards).

Google Wifi collects and uses data as explained [here](https://support.google.com/wifi/answer/6246642?hl=en), including information about the types of connected devices you have and their network usage. The cloud services, Wifi point stats and app stats data described [here](https://support.google.com/wifi/answer/6246642) (which we refer to as Wi-Fi network performance data) is not used for ad personalization. We may use this data to keep you informed about updates on Google services, including connected home devices and services we think may help you -- such as an additional Wifi point to improve your internet connectivity. You can opt out from certain portions of this data collection as explained [here](https://support.google.com/wifi/answer/6246642).

Google Wifi does not track the websites you visit, nor does it monitor the content of traffic on your Wi-Fi network. Google Wifi sets your default DNS provider to Google Public DNS; more info on what Google Public DNS collects can be found [here](https://developers.google.com/speed/public-dns/privacy). You can change your DNS provider in the [Advanced Networking settings](https://support.google.com/wifi/answer/6274141) of the Google Wifi app at any time.

One example of this is you may be able to share your Wi-Fi network performance data with your internet service provider so they can help you troubleshoot your Wi-Fi or internet connectivity issues.