A look at Phreeli, a privacy-focused phone carrier that lets users sign up with only a ZIP code and uses an encryption system based on "zero-knowledge proofs" (Andy Greenberg/Wired)

Andy Greenberg / Wired:
A look at Phreeli, a privacy-focused phone carrier that lets users sign up with only a ZIP code and uses an encryption system based on “zero-knowledge proofs”  —  Privacy stalwart Nicholas Merrill spent a decade fighting an FBI surveillance order.