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CHRIS VELAZCO: I've
tried the fingerprint

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sensor of the future and
it works pretty well.

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Not amazing.

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It gets the job done.

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So we're looking at
a Vivo prototype.

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Vivo, a Chinese
smartphone company,

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work with Synaptics, which
just recently put out

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its first in-screen
fingerprint sensor

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and that's sitting under
the display right here.

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It's actually a really clever,
almost elegant solution.

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In case you didn't know,
here's how smartphone screens

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are generally laid out.

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There is a top pane of
glass, usually gorilla glass.

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Then there is the panel itself,
in this case the OLED panel.

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Under that, in this case, is
Synaptics's fingerprint sensor.

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It uses the light
from the OLED display

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to illuminate your fingerprint
as it's pressed on the glass.

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It checks out against
a fingerprint that's

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already been stored,
and voila, you're

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up and running with the phone.

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As I said, really clever, right?

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I've been trying it
for a few minutes

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here in the Synaptics
booth behind three

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miles of drones in
South Hall, and it

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actually does work pretty well.

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There were moments
where I would sort

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of mesh my thumb against the
screen, it wouldn't work.

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And that, I think, speaks to
one of the potential pitfalls

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of this technology, it does
take one snapshot of your finger

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and uses that as the baseline
for future attempts to log in.

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If you happen to press
a little too hard,

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or maybe not quite hard enough,
if that doesn't match up

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with what it saw the
first time, you're

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going to have to try again
or punch in your pin.

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I should also point
out that people screw

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up their screens all the time.

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So if a scratch or a crack
happens to run across the spot

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where the fingerprint
sensors sits,

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it's feasible that
you wouldn't be

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able to log in with your
fingerprint after that.

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Theoretically, you
should be able to go back

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in with another login
method and re-register

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it there by making
it the new normal

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and it should work just fine.

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But really, who wants
to touch a crack all day

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when you don't have to?

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When it does work, it
works surprisingly well.

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It's not quite as
fast as what you'd

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see on, say, a
traditional fingerprint

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sensor on an iPhone.

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But considering the
technology and considering

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how unfinished this
particular software

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is, in a prototype
device no less,

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I'm still pretty impressed.

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There's a lot more to see and
experience here at CES 2018,

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so join us for much, much more.

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