Firewalls Don't Stop Dragons Podcast Double Blind Armadillo
Mar 2, 2026
Nick Merrill, founder of Phreeli and privacy technologist building privacy-preserving telecom services. He explains how cell service can work with almost no personal data. Topics include using ZIP+4 for billing, eSIMs and prepaid models, unlinking identity from metadata with the Double Blind Armadillo approach, mixing/batching to reduce fingerprinting, and handling lawful intercept and recovery tradeoffs.
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Calyx Institute Shaped Freely’s Privacy Design
- Nick Merrill founded Calyx Institute to build privacy-by-design software blocks for providers and at-risk users.
- That decade of building open tools for reporters and NGOs shaped Freely's UX focus and practical threat-model thinking.
Switch To Prepay To Avoid Identity Linking
- Operate on prepay to avoid KYC and credit checks when identity separation is required.
- Freely is prepay-only so it doesn't extend credit, eliminating the need to pull credit reports or tie accounts to identities.
Accept Privacy-Friendly Payments
- Offer multiple anonymous payment routes to preserve pseudonymity in practice.
- Freely accepts cash-like workarounds and privacy coins including Monero and Zcash to let users pay without exposing identity via credit cards.