The Nielsen Computer and Mobile Panel is a research initiative by Nielsen that collects data on internet usage to understand online behavior and trends. Participants install the Nielsen app or software on their devices, allowing Nielsen to gather insights that help improve products and services used online today. In return, members can earn rewards such as entries into monthly sweepstakes or points redeemable for gift cards.

To participate, individuals must be at least 18 years old and capable of entering into a binding contract. They should own or have control over the devices on which the Nielsen software will be installed. The panel is open to residents of the United States, and participants can install the software on multiple devices, including computers and mobile devices. There is no fee to join, and Nielsen ensures that personal information is kept private and used solely for research purposes.