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Samsung envisions phones that read your palm

You could get hints at your password without getting an obvious clue.
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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 a palm 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).

This could theoretically extend to signing you in, although Samsung would likely want to implement depth sensing or a similar technology to prevent evildoers from cheating with photos.

There's no certainty that you'll ever see this in the Galaxy S9 or any future Samsung phone. It's just a patent filing, and that won't necessarily translate to a finished product. It's a simple-enough concept, though, and it could be extremely helpful if you're struggling to get into an online store or are worried that you've locked yourself out of your phone.

Via: CNET
Source: WIPO (PDF)
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