It should also be noted that the two-factor authentication could be reliable only when it comes
with a reliable password.　Physical tokens, cards and phones are easily left behind, lost, stolen and abused. Then the password would be the last resort. A truly reliable 2-factor solution needed for important accounts requires the use of the most reliable password.

It is too obvious, anyway, that the conventional alphanumeric password alone can no longer sustain the demand and we urgently need a successor to it, which should be found from among the broader family of the passwords and the likes.