Ask HN: Do you have a family code word? (AI Hostage Scams)

Does anyone have a special code word that you and only your family members know? A word that you can use to verify a real emergency situation.

I've been seeing more examples of people using AI voice cloning tools in money scams. [1]

Seems like a pretty effective and low effort strategy or am I missing something?

[1] https://nypost.com/2023/04/12/ai-clones-teen-girls-voice-in-1m-kidnapping-scam/