Unique Browser & Unique visitor & Unique user & Unique Device & Unique Cookie

Unique Browser

An identified and unduplicated Cookied Browser that accesses Internet content or advertising during a measurement period. This definition requires taking account for the potentially inflationary impact of cookie deletion among certain of the cookied browsers that access Internet content.

Unique Cookie

A count of unique identifiers…that represents unduplicated instances of Internet activity (generally visits) to Internet content or advertising during a measurement period.

Unique Device

An unduplicated computing device that is used to access Internet content or advertising during a measurement period. A count of unduplicated devices necessarily accounts for multiple browser usage on an individual computer or other computing device.

Unique user

Unique individual or browser which has accessed a site or application and has been served unique content and/or ads such as e-mail, newsletters, interstitials or pop-under ads. Unique visitors can be identified by user registration, cookies, or third-party measurement like ComScore or Nielsen. Reported unique visitors should filter out bots. See iab.net for the audience reach measurement guidelines.

Unique visitor

Unique individual or browser which has accessed a site or application and has been served unique content and/or ads such as e-mail, newsletters, interstitials or pop-under ads. Unique visitors can be identified by user registration, cookies, or third-party measurement like ComScore or Nielsen. Reported unique visitors should filter out bots. See iab.net for the audience reach measurement guidelines.

Unique listeners/streamers : A metric specific to Digital Audio

The size of the audience for a given audio program, piece of content, or advertising message. Typically ‘listeners’ and ‘streamers’ are interchangeable.