What is first-party data?
Definition
First-party data is information you collect directly from your own customers, through your own systems, with their knowledge and consent. It includes names, email addresses, marketing consent and visit patterns such as frequency and dwell time. For physical venues, guest WiFi sign-ins are a primary source of it.
First-party data explained
The distinction is who collected the data. First-party data comes from your own customer relationship. Second-party data is another organisation’s first-party data shared with you, and third-party data is bought from aggregators. First-party data is the most accurate of the three and the easiest to hold lawfully, because consent was given to you directly.
It matters more as third-party cookies disappear and privacy regulation tightens. Online, brands are rebuilding their audiences from logins and subscriptions. Physical venues have an equivalent that many underuse: the captive portal. Each guest WiFi sign-in can capture a verified contact, a consent record and a visit, then pass it to a CRM such as Salesforce, HubSpot or dotdigital.
The yield depends on design and compliance. A short, clear splash page with conscious-choice opt-ins captures more usable records than a long form. Under GDPR, consent must be specific and logged, and data must be kept accurate, which is why email verification at sign-in improves list quality. Once captured, the data drives segmentation and campaigns across email, SMS and paid social.
Guides on First-party data
- Technical guideWhat is first-party data and why does it matter for businesses?
- Technical guideHow to collect first-party data through WiFi
- Technical guideHow to use first-party data in marketing campaigns
Where it fits
Related terms
Need more than a definition?
Talk to our team about how Purple combines guest WiFi, captive portals, RADIUS, and analytics into a single platform that runs on the access points you already own.