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The cloud services, Wifi point stats, and app stats data described here (which we refer to as “Wi-Fi network performance data”) is not used for ad personalization. Google Wifi collects and uses data as explained here, including information about the types of connected devices you have and their network usage. When you delete your account, this sensor data is deleted from our servers as explained in our retention policy.Learn more about the Google Assistant and the choices available to you here.) (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. For example we don’t use sleep data from your Nest Hub (2nd. We do not use environmental and activity sensor data for ad personalization.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 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.
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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, a new feature, to help your thermostat adjust for this so it sets the correct temperature.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.The temperature and humidity sensors in your Nest Learning Thermostat help keep your home comfortable while saving energy.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. 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.