News & Cases

How do you measure campaign results when users reject cookies? What happens when someone clicks on your ad but rejects cookies on your landing page? Does this mean you've lost valuable insights into your campaign performance? Not necessarily. As more consumers choose not to share their personal data, advertisers face a growing challenge: how can you accurately measure campaign performance when users don't give consent? Traditional analytics solutions often rely on cookies and personal identifiers. When visitors reject tracking, this can create significant gaps in campaign reporting, making it harder to evaluate effectiveness and optimise advertising investments. But there are ways to overcome these challenges. From theory to practice: a joint exploration with Omnicom Together with Omnicom, Opt Out Advertising has explored the practical side of privacy-first campaign measurement. We focused on one central question: How can advertisers continue measuring campaign results when users do not provide consent on the landing page?" Rather than focusing solely on theory, we examined the technologies, configurations and measurement methods that can help advertisers preserve valuable campaign insights while respecting user privacy. The result is our new whitepaper: Mastering first-party measurement.