let me be faster in this intro let me do
that again so as you know I've been
using the Galaxy S10 as my main device
for a period of time now now I've given
up on the face unlock I knew it wasn't
very secure but then I made that video
showing just how easily fooled it was I
played a video unlocked the device I'm
just not using Face Unlock anymore not
the way that it's implemented on a
Galaxy S10 but that's not all bad
because of course this device has that
really cool ultrasonic fingerprint
scanner underneath the display of the
phone now in the face unlock hack video
I explained that I wasn't so happy I
wasn't enjoying the in-display
fingerprint reader very much it just
wasn't performing as I kind of wanted it
to and so I gave it some thought and I
was like maybe there's a way to improve
this maybe I can register the same
finger more than once I was thinking to
myself wait I just came from the OnePlus
6t and that didn't work and typically
with the in display Optical based
fingerprint scanners they won't allow
you to register the same fingerprint
more than once so for example okay on
the right hand side here I have the
OnePlus 6t you can see two fingerprints
are registered left thumb right thumb if
I go to add another fingerprint
and I use the same Thumb in order to
like improve I guess the reading improve
the image that's stored within the phone
if I do it with this with the 6t it will
say the fingerprint has already been
enrolled please try another finger so it
won't allow you to have the same finger
registered more than once maybe it has
something to do with the optical
technology that's at play here in the 6t
and other in display fingerprint
smartphones but on the S10 it doesn't
work that way so to my pleasant surprise
I could go in there and register the
same thumb print more than once and
after doing so I actually ended up with
a more accurate more satisfying
experience with the device this is the
S10 that I've been using for the purpose
of this demonstration I have the s10e
over here on the right you can see I've
added one single fingerprint on this S10
plus if I click on there I can add
another one now in this case what I'm
going to do is scan in the same finger
but the next time around try to do it
from different angles in order to
improve the ultrasonic recognition so
I'm gonna go ahead and just move my
thumb around a bit make sure you get
those really flat readings on the bottom
part and then also the edge readings on
the top part and now we have two
Fingerprints of the same fingerprint now
if I wanted to get real crazy I could
add this fingerprint a third time this
is the third reading for the same finger
in my experience it just improves the
accuracy and it improves the unlock
functionality of the device some of you
have mentioned in the comments I've even
seen videos made about it that you don't
need to hold your thumb on the
fingerprint scanner this is also true
you can kind of lift it off and it sort
of makes it seem faster than maybe you
know you you might have originally
thought whether you lift it off or not
it's not really important the point is
you want it to work look see
see it's still it's still not a hundred
percent it still can miss from time to
time and say no match and there is a
pressure component to it based on how
hard you press down but nonetheless it's
still in my opinion not as good as the
capacitive fingerprint scanners that
have been on the back of these devices
in the past but it really improves the
in-display fingerprint scanner to
register the same finger more than once
I recommend you do it and I recommend
you get all the edges of the finger to
improve the recognition there is the
added security with the ultrasonic
technology so these are going to be
tougher to crack than the same or
seemingly similar scanner that exists on
a device like this the OnePlus 6t that's
just an image of your fingerprint and
for whatever reason it won't let you
register the same finger more than once
little trick little hack I totally
forgot about it because the optical base
scanners that I had been using wouldn't
allow for it but it does work on the S10
S10 plus so go for for it if you own one
of these