In the marketing table, Reddit’s _rdt_uuid assigns a unique user ID for tracking activity across websites and lasts three months. _rdt_cid also tracks visitors across websites and lasts one month.
Supporting quotations
Marketing
Reddit _rdt_uuid This cookie is set by Reddit to assign a unique ID to a user, which helps Reddit track user activity across websites. Persistent 3 months
Reddit _rdt_cid This cookie is set by Reddit to track visitors across websites Persistent 1 month
Linking & Identification · Company practice
Snapchat IDs support visit statistics and targeted ads
Snapchat’s _schn1 assigns an ID for session tracking and statistics across multiple visits, which may also create marketing leads; it lasts one day. _scid and _scid_r assign IDs enabling third-party advertisers to target relevant ads and each lasts 13 months.
Supporting quotations
Snapchat _schn1 It sets a unique ID for the visitor to track individual sessions on the Website, allowing the Website to compile statistical data from multiple visits. This data can also be used to create leads for marketing purposes. Persistent 1 day
Snapchat _scid It sets a unique ID for the visitor that allows third-party advertisers to target the visitor with relevant advertisements Persistent 13 months
Snapchat _scid_r Sets a unique ID for the visitor that allows third-party advertisers to target the visitor with relevant advertisements. Persistent 13 months
Linking & Identification · Company practice
Microsoft synchronizes IDs and records sessions
Microsoft’s MUID provides a unique user ID and synchronizes it across Microsoft domains for tracking. _uetsid contains the ID for a unique site session. Both entries have a persistent 13-month duration, including the session-ID entry.
Supporting quotations
Microsoft (Bing) MUID Used widely by Microsoft as a unique user ID. The cookie enables user tracking by synchronizing the ID across many Microsoft domains. Persistent 13 months
Microsoft (Bing) _uetsid Contains the session ID for a unique session on the site Persistent 13 months
Linking & Identification · Company practice
Microsoft tracks visitors across sites for relevant ads
Microsoft’s _uetvid tracks visitors on multiple websites to present ads based on their preferences. Its stated duration is 13 months.
Supporting quotations
Microsoft (Bing) _uetvid It’s used to track visitors on multiple websites, in order to present relevant advertisements based on the visitor's preferences. Persistent 13 months