> And when you do unlock your biometric-enabled device, you can do so in front of people whom you wouldn't want to know your PIN. You can be on public transport, standing in a queue or even sitting down at your biometric-enabled PC with a friend and authenticate without disclosing an easily reusable secret.

YES! Both Android and iOS insist we re-type our password at random times when using biometrics, and of course "random time" is always the worst possible time (in the subway, on a plane, etc.)

I don't understand this. Why force me to type a password at the risk of divulging it? What's the point of this?