Trung Minh Le

Passwords get phished, leaked, and reused every day, and password-only login fails the moment the password itself is compromised. DynamicKey is a Mac app plus a Safari browser/Chrome extension that replaces password-only login with a local, multi-signal check. To log in, the master password, the user's typing rhythm, a trusted keyboard layout, and a trusted WiFi network must all agree, on this Mac and nowhere else. A correct master password typed with a non-matching rhythm still does not log in. Site passwords are separate random 24-character strings generated and stored locally, so a leaked master password cannot be replayed at any website. Around that check, DynamicKey helps the user judge risk instead of deciding for them: LeakPeek checks saved passwords and emails against breach records, DynamicShield scores mail inside Gmail web and warns only, never blocks, and a Daily Summary briefs overnight sign-ins, new leaks, passwords needing attention, and one action for today.