aha! i downloaded tiktok just now to test, and I'm immediately presented with a passkey prompt: "scan this QR code with a device to sign into TikTok" If I had

aha! i downloaded tiktok just now to test, and I'm immediately presented with a passkey prompt: "scan this QR code with a device to sign into TikTok" If I had a TikTok passkey on my phone at the time, it's likely that the prompt would be an ordinary FaceID auth challenge with a PIN fallback. Perhaps OP has faceID disabled?