AI clones a voice from 3 seconds of video. FamWord gives your family rotating secret words that a clone can never know. Read them aloud on any suspicious call — if they match, it's really them.
Sources: FBI IC3 Annual Report 2025; McAfee voice cloning research; Cybernews, March 2026
Works on iPhone and Android, installs to your home screen, needs no internet during calls. Set up your family in 5 minutes.
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No. The words are computed on each phone from a shared secret — like Google Authenticator. It works with no signal, on a plane, abroad. The only internet needed is once, during family setup.
If she can read three words aloud, she can use FamWord. That's the whole interaction. Setup is done by you, on her phone, in person.
No. Timezones don't matter at all: the words depend only on the exact moment, not on local time. Travel freely. A genuinely wrong clock does matter — if a phone's time is off by more than a minute, its words won't match. The app checks the clock whenever it can and warns you loudly; the fix is one toggle: automatic date & time in Settings. And if a clock is wrong anyway, there's a Challenge check inside the app that needs no correct time at all — you say 3 letters, the caller types them, both phones show the same words.
A static safe word can be overheard, leaked, or guessed. FamWord words change every 30 seconds — like a bank code, but made of simple words you can hear clearly over a bad phone line.
The scammer is on a phone call, not in the room. And since the words rotate, yesterday's words don't help today. For setup, you scan the code face-to-face.
Nothing. Your family's secret never leaves the phones. There are no accounts, no phone number book, no servers holding your words. We literally cannot see them.
One family is free, always. Extended family (up to 6 people) will be a few dollars a month. No ads, no data selling — ever.