How is the measurement done in SEAL Metrics? 

SEAL Metrics is a cookieless tracking.

SEAL Metrics tracking system is based on aggregated data. SEAL only tracks «hits.»

ePrivacy Regulation explains that if you want to track individually, even anonymously, you must require consent from users.

SEAL tracks «hits» or page views; each click is not correlated with other clicks, so we don’t track users’ behavior. Instead, SEAL tracks individual and isolated hits.

From each hits SEAL tracks:

1. Timestamp
2. User Agent (we don’t store the user agent)
3. Current URL
4. Referral URL

SEAL is cookieless and privacy-first web analytics compliant with GDPR, CCPA, PECR, and ePrivacy directives, based on only four variables, while it’s completely useful for marketers and data analysts.