Privacy is not a feature. It is the foundation.
DREJ was built from the ground up around privacy. You control what you share, how much detail, and who can buy it.
5 Privacy Levels
None
Full data, no transformations. Use when you want buyers to see every detail.
Low
Identifiers cryptographically hashed using HMAC-SHA256. All other data remains unchanged.
Medium
Identifiers hashed. Emails anonymized. Phone numbers masked. Amounts rounded to nearest 10. GPS generalized to neighborhood level.
High
Identifiers hashed. All text fields removed entirely. Numbers rounded to nearest 100. Only category and type fields kept.
Maximum
No individual records shared. Only aggregate statistics: total count, data types present, and date range.
Extra Protection for Pool Data
When your data goes into a data pool, it receives an additional layer of privacy protection — k-anonymity (k=5). Every record is indistinguishable from at least 4 other records. Records that don't meet this threshold are suppressed.
Each of the 11 categories has a defined output schema. Pool data is transformed to match before export.
Encrypted at Every Step
On device
AES-256-GCM before data leaves your phone
In transit
TLS (HTTPS) for all communication
At rest
Encrypted AWS infrastructure with strict access controls
Privacy hashing
HMAC-SHA256 one-way function — originals cannot be recovered
Your Rights
Right to deletion (GDPR Art. 17)
Full account and data deletion
Right to data portability (GDPR Art. 20)
Export all your data
Consent management
View, modify, or withdraw consent anytime
EU Data Act compliance
Fair compensation, purpose limitation, data product passport
Have a privacy question? privacy@drej.io