Let me say this, the difference between wallet transactions and exchange transactions is that in exchange transactions, a KYC verification face scan pops up, while in a wallet it does not; each transaction only requires the phone's own biometric recognition, which is the face scan or fingerprint used to unlock the phone, and is unrelated to KYC. KYC face scans will only randomly pop up when claiming airdrops. So there's no need to argue, it was just not made clear which kind of face scan was being referred to.