What is a unique visitor? A unique visitor at MindViz Tracker is based purely on a cookie. Basically the first time someone visits your website they are considered a daily and monthly unique visitor. Then a tiny cookie with no personally identifiable information (just your project id and a simple variable) is created.

If that visitor session stays active, by them visiting your website again and again before the session time expires then they won't be counted as a unique visitor again. But if the session time has expired, they are counted as a daily or monthly unique visitor again and a new session is created. And it starts all over again.

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Page Loads - Returning Visitors