Biometric authentication can be a way out of this difficulty. A fingerprint scanner at the back of a smartphone will be a painless way of logging into anything you want.
As long as it can't be defeated with scotch tape and gelatine.
One great thing about non-biometric authentication systems is that it's easy to replace a compromised keycard or password. Replacing your own fingers, not so much.
Well, if you don't mind using a complex password on a keyboard-less device, the whole discussion is moot.
Aren't we talking about alternatives to conventional password entry because it is a great nuisance?
Voice recognition, Face recognition and Finger Printing all seem reasonable alternatives. I do believe it is a matter of time before they become viable in smartphones.
How about an RFID chip in your wrist watch which makes your smartphone log in. Outside of a meter or two, it will ask for a complex password. Why not? I will buy it :-)
It did occur to me. If your information is _that_ valuable then you have a different class of problem than the inconvenience of entering a password on a device with a soft keyboard.
