How does Twitter determine which devices are associated with my account or device?
When you log in to Twitter on a device, we associate that device with your Twitter account. Whether or not you are logged in to Twitter, we may also receive information about your devices when, for example, that information is shared by a partner; you visit Twitter.com; you visit third-party websites that integrate Twitter content; or you visit a Twitter advertiser’s website or mobile application. We may use this information, most commonly IP addresses and the time at which the information was received, to infer that certain devices are associated with one another, including the devices on which you log in to Twitter. To learn more about the devices associated with your account, check out Your Twitter Data while logged in. To learn more about the other devices associated with the device or browser you are currently using, visit Your Twitter Data while logged out.
What does ‘Personalization across devices’ mean?
By better understanding how devices are related, we can use information from one device to help personalize the Twitter experience on another device. For example, if you commonly use Twitter for Android around the same time and from the same network where you browse sports websites with embedded Tweets on a computer, we may infer that your Android device and laptop are related and later suggest sports-related Tweets and serve sports-related advertising on your Android device.
What privacy choices do I have?
We are committed to providing you meaningful privacy choices. You can control whether we link your account to browsers or devices other than the ones you use to log in to Twitter (or if you’re logged out, whether we link the browser or device you’re currently using to any other browsers or devices) by visiting your Personalization and data settings as described here and adjusting the Personalize across all your devices setting.