--- title: "Can you recognize returning users that use the \"Private\" or \"Incognito\" mode of their browser?" slug: "can-you-recognize-returning-users-that-use-the-private-or-incognito-mode-of-their-browser" updated: 2024-03-15T11:31:40Z published: 2024-03-15T11:31:40Z canonical: "docs.mapp.com/can-you-recognize-returning-users-that-use-the-private-or-incognito-mode-of-their-browser" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.mapp.com/llms.txt > Use this file to discover all available pages before exploring further. # Can you recognize returning users that use the Private or Incognito mode of their browser? In general, no, as user recognition in Mapp Intelligence is based on cookies. If a user visits your website using "Private Mode" (Firefox, Safari) or "Incognito Mode" (Chrome), his cookies are deleted automatically when he closes the browser. If a user revisits your website afterward, he **cannot** be recognized as a returning user with the help of cookies. User recognition gets more precise if the user logs in on your website: If so, a Customer ID can be passed that allows identifying the user as returning visitor. Further information can be found in the training chapter [Basic Metrics](/v1/docs/analyses-2-basic-metrics).