Sometimes, we (or our service providers) may use the information we collect -- for instance, usernames, IP addresses and unique mobile device identifiers or other IDs (like social network ID) -- to locate or try to locate the same unique users across multiple browsers or devices (such as smartphones and tablets), or work with providers that do this, in order to better tailor content and features and provide you with a seamless experience across devices. If you wish to opt out of cross device tracking for purposes of interest-based advertising, you may do so through your Android or Apple device-based settings.</p>3.