Concrete scenes, not categories. Each one shows the trap, the move, and the outcome. The first time one of these happens to you, this page becomes obvious.
Her voice was cloned from a three-second voicemail you posted last year. The caller ID is hers. She is panicked, says she crashed the car, needs EUR 800 right now. The voice is hers.
You open Hongi. Your screen shows the word you should be hearing from her. She does not know it. The AI does not either. You ask her to read her word. Silence. You hang up.
Thirty seconds. EUR 800 still in the account.
The caller ID matches your bank. The voice is calm, professional, knows your last transaction, and asks you to authorise a transfer to a new IBAN to block the fraud. Everything they say checks out. Nothing actually proves it is the bank.
You and your bank are paired. Every call from them shows a rotating codeword on your screen. The real advisor reads theirs. The fraudster has nothing. You hang up before the sentence finishes.
The best kind of outcome. Nothing happened.
Friday, 16:47. New supplier. Tight deadline. Transfer needed before the bank closes. The signature, the sending address, the tone are all right. BEC fraud cost businesses USD 3B last year.
Finance is paired with the CEO in Hongi. You call her direct line. She opens the app. The codewords match. Authorised. They do not match, you call the police instead.
One pairing covers every future wire request from her.
Branded jacket, tablet, the right colours. They want a signature on a device you do not recognise, or access to drop off "a high-value package". You have ten seconds to decide.
For valuable deliveries, the courier company pairs you with the driver before dispatch. At the door, the driver opens Hongi. Both phones agree. Door opens. They do not, you stay on the inside.
No more deciding who is real on a gut feeling.
Remote notarial signing is routine now. The face on the call can be a deepfake. The session can be hijacked between the ID check and the signature. The document signed may not be the one you read.
Notary and client pair before the session through the firm portal. Both read codewords on camera at the start of the call and again at signing. Both reads land in the session recording with a timestamp.
Remote signing with identity actually attested.
The five above are the easy explanations. Hongi works in any conversation, on any channel, between any two people who paired once.
Two phones, one QR scan, a shared key derived locally. No accounts, no logins, no server holding your secrets. Free on iOS and Android.
