Dai Vernon is the first password manager built on zero-persistence cryptography. Your master password and vault keys never get stored anywhere—not even encrypted. They're generated on-demand, used once, then destroyed from memory. Unlike traditional password managers, there's no encrypted vault to steal. Dai Vernon eliminates the vault entirely. Free during launch week (Feb 7-14, 2026). Patent-pending architecture. Import from KeePass/CSV. Multi-user support with cryptographic isolation.