There's a good possibility that you've forgotten a password and had to get hints or recover it. But the process for that isn't very trustworthy. Intruders can guess security questions , for one thing. Samsung might soon have a subtler way of helping you remember your password, though: it would give you apalm reading. A recently published patent application shows that Samsung has been exploring a system that would scan the unique lines on your palm and use them to display hints in the form of incomplete characters. You'd get a nudge in the right direction, but nothing so obvious that a thief could guess it (even if they could use your hand).