How are people tracked?

Lead Liaison uses both cookies, IP addresses, and website client data (browser) to uniquely identify visitors. When cookies are allowed, the unique identifier becomes the email address. Past, current, and future visitors are merged together using the email address. When cookies are not allowed (blocked), the unique identifier is the visitor's IP address concatenated with the header value of "HTTP_USER_AGENT" from the user's browser.

How often is the data updated?

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