<p>There is enough information in the user agent that sometimes only a few visitors to a website will be the same.
If the user agent is combined with another piece of non-unique identifying information, often it results in a unique fingerprint.
<p>There is enough information in the user agent that sometimes only a few visitors to a website will be the same.
If the user agent is combined with another piece of non-unique identifying information, often it results in a unique fingerprint.