Password less authentication ?
Okay so what do you think would be used instead of a password ?
Fingerprint ?
Face lock ?
Voice recognition ?
The authenticator by Google?
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Except the last one , I do believe each and everyone of them comes with a fault , come on one can actually do something to a person to connect with the device .. unfortunately us traders hold most in our mobile phones and I do think not just passwords , but everything at once all the things that I listed are not enough too  you can never be more secure .