CipherBoard

CipherBoard turns the keyboard into a protected compose-and-read surface. Two people pair in person, verify the same Safety Number, and exchange encrypted text through any app that can carry text. There are no CipherBoard accounts, servers, phone numbers, or network requests.

Why CipherBoard Offline by design No Internet permission, analytics, ads, cloud backup, account system, or CipherBoard server. Physical trust setup Two-way QR pairing and an in-person Safety Number comparison establish each contact. Protected writing Private drafts stay in CipherBoard's IME panel; the host app receives only persisted ciphertext. Protected reading Plaintext is drawn read-only in a FLAG_SECURE panel without selection, clipboard export, autofill, or Accessibility text. Modern sessions Pinned vodozemac Olm sessions provide per-message keys, forward secrecy, replay handling, and out-of-order delivery support. Use any transport Send the resulting text through SMS, email, Telegram, Signal, or another text-capable app. CipherBoard never sends it itself.