Snowplow supports pseudonymization through multiple layers of data protection:

• Client-side Hashing: Snowplow JavaScript and mobile trackers can hash PII (emails, user IDs) before transmission, ensuring sensitive data never leaves the client
• Enrichment-based Pseudonymization: Snowplow's enrichment pipeline can pseudonymize IP addresses, user agents, and other identifiers during real-time processing
• Custom Context Fields: Configure Snowplow to collect pseudonymized identifiers instead of raw PII, maintaining user tracking capabilities while protecting privacy
• Snowflake Integration: Combine Snowplow's pseudonymization with Snowflake's row-level security, data masking, and access controls for comprehensive data protection

This multi-layered approach ensures GDPR compliance while preserving analytical value of behavioral data.