AI voice scams are devastating families. Scammers clone your voice to trick aging parents into sending thousands. FRAUTH gives families a rotating 6-digit code that appears on both phones simultaneously. If codes match, it's really you. If not, hang up. • TOTP codes rotate every 30 seconds: unfakeable • AES-256 encrypted, offline-ready, privacy-first • Simple enough for any parent: just read the number • Works offline on iPhone and Android