Signal is technically unable to read your messages or listen to your calls because of how encryption works — your message history lives on your device, not Signal's servers.
Your private messages and calls are protected by encryption that even Signal itself cannot break — this means law enforcement cannot obtain your message content from Signal's servers because Signal does not have it.
Cross-platform context
See how other platforms handle End-to-End Encryption and Message Access and similar clauses.
Compare across platforms →This is a strong and specific privacy protection: not only does Signal choose not to read your messages, it is technically architected so that it cannot, which provides much stronger protection than a policy-only commitment.
(1) REGULATORY FRAMEWORK: The technical architecture described engages ECPA (18 U.S.C. §2510 et seq.) and the Stored Communications Act (18 U.S.C. §2701), under which Signal as a provider has limited obligations to disclose communications it cannot technically access. GDPR Art. 25 (privacy by design and default) and Art. 32 (security of processing) are directly satisfied by this architecture. CALEA (47 U.S.C. §1001) wiretap assistance obligations are effectively limited by the technical impossibility of access. (2)
Compliance intelligence locked
Regulatory citations, enforcement risk, and due diligence action items.
Watcher: regulatory citations. Professional: full compliance memo.