Passport Prime KeyOS 1.3.1 Adds BIP39 Seed Phrase Last Word Generation

KeyOS 1.3.1 enables on-device generation of final seed phrase words from partial inputs, allowing manual entropy creation via dice or coins without external tools.

Woofun AI reports that Passport Prime has released KeyOS 1.3.1, introducing functionality to generate the final word of a BIP39 seed phrase. Users may input the first 11 or 23 words, allowing the device to calculate valid remaining words that satisfy checksum requirements. The update supports manual seed phrase creation using physical methods such as dice rolls or coin flips, completing the process directly on the hardware without external dependencies. The Foundation noted that AI security audits conducted with Claude Fable Max and ChatGPT 5.6 Sol Extra High identified no serious security vulnerabilities.