… Like other companies, Resonate observes people’s online habits by putting lines of code called cookies on websites. When you visit a site, the cookie gets attached to your browser. It then keeps tabs on the sites you go to and reports that information back to the company doing the tracking.
The company then goes one step further and recruits people it has observed to take part in massive online surveys, which ask about political beliefs, policy preferences, and brand habits. CONT.
NPR News