0:00:06.710,0:00:08.389
Hey it's Norm from tested and[br]I am here with:
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Frank Bullito
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We're here at Adam's shop[br]for another video
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Interesting video this time, it's [br]an experiment.
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yeah[br]An honest to goodness experiment.
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We have no idea how this is going to end.
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So today we're going to talk about technology.[br]Are you comfortable?
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ok..[br]Special effects and technology
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Last year apple released the iPhone 5-S,[br]
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which was their first product[br]using 'Touch I.D.'
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You've probably heard of Touch I.D., [br]it's a bio-metric sensor system
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for your phone, to double as[br]your password.
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Now this year there are more products[br]using Touch I.D.
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and more services using them,
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it's being used for things like Apple-pay,[br]passwords, one password
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And we wanted to see, basically [br]how fool-proof it was.
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We're not going to hack Touch I.D[br]people have made claims about hacking it
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Last year a hacking group over[br]in Germany
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named 'Chaos Computer Club' released[br]a video
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showing how they 'spoofed'[br]Touch I.D
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and what they did was they duplicated[br]someone's fingerprint
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and put it on acetate and created a[br]relief image,
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and it was a pretty involved process.
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But we wanted to-[br]We wanted to make it more involved
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Even more involved, but basically try[br]to understand how Touch I.D works.
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Um, do you know how this works?[br]
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Why don't you explain.[br](laughs)
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So beneath this home button[br]on the iPhone and the new iPads
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is a sensor, basically an optical sensor,[br]almost like a camera.
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There is a capacitance sensor,[br]which makes the touch screen work,[br]
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so it knows, it registers[br]that your finger is there.
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But basically it takes a high resolution image,[br]people have said it's about 500 dpi.
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Which is fairly high, Apple talks about [br]sub-dermal imaging, but basically,
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it knows all the grooves and all [br]the curves of your fingerprint
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and registers that, uh because you do[br]need to register it multiple times,
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stores it locally, so when you put your finger[br]on there it recognises that it is your fingerprint.
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So we wanted to see if we could activate, [br]unlock a phone, activate Touch I.D
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without having the actual hand there;[br]a warm bodied hand,
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maybe a.. dismembered hand.[br]There you go. (laughs)
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So this is actually a hand-cast we did[br]a couple of months ago, of my hand
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It's just a silicone hand-cast and [br]based on your experience in the
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special effects industry Frank, [br]how accurate is the fingerprints
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on something like a hand-cast?
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Well, I mean, the silicone doesn't[br]shrink or expand or anything,
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so it's pretty accurate, as long[br]as we got in all the detail
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This was done in an alginate mold,[br]so the detail might be a little soft
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but what we'll do today is we'll do a[br]little silicone cast of your finger
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..or my finger and we'll see if[br]we can crack it with that.
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So we're talking about mold materials[br]and casting materials
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and we're using silicone as a mold material[br]and in doing it right-
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You're going to get a more accurate casting.
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Hopefully it will be almost exactly 1-to-1,[br]y'know.. microns of accuracy.
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Hopefully.[br]Hopefully.
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And then the casting material, also important.[br]yeah
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'cause you have resins and silicones[br]and all sorts of stuff.
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Well the pad of your fingertip is about[br]a 35-A durometer, but-
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When you say Durometer that's how[br]stiff it is, how rigid it is
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Yeah, the Durometer scale is how[br]you measure how soft
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or how rigid something is.[br]There's an 'A' scale for soft things,
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and a 'D' scale for rigid things.
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And your thumb-tip is about a 35-A.[br]ok
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But, the problem is is that when[br]we push on a button
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it doesn't have enough give to[br]kinda like.. flatten out,
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so I think we want to go a[br]little bit softer.
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So we were doing this off-camera,[br]this casting is done in
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a 20 durometer silicone, which technically[br]is softer than the 35 of your finger.
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I think we want to go softer than that,[br]I have a 10 Durometer.
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That's right, you want it to be able[br]to flatten without pushing the button.
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Yeah.
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Now the other piece of [br]the puzzle is capacitance.
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You need to be able to activate that[br]touch sensor in the first place.
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How are we going to give silicone capacitance?[br]Because if you put a silicone finger,[br]
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or you know, a hot-dog on here,[br]it's not going to activate the touch-screen.
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Maybe a hot-dog will... would a-[br]A hot-dog would, yes.
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But a silicone hot-dog wouldn't.[br]We can make hot-dog fingers.
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uh.. we could do that.
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I think, from what everybody's told me,[br]adding graphite is enough to
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give it capacitance. So that's mixing it into [br]the silicone or powdering
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the surface of the mold, and then [br]putting the silicone behind it
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so that the silicone grabs the[br]surface of the graphite.
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We'll try it. [br]We'll try it.
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Like I said, this is an honest-to-goodness[br]experiment and-
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And there's a good likelihood we'll fail.[br](laughs)
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But follow along the process,[br]let's go to step one
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which is creating a casting of[br]your finger.
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If you're using 'body double' from 'Smooth-on,'[br]which is just a casting silicone,
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Specifically for life casting.[br]For life casting, it's accurate as possible,
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we've done life-casts with it before,[br]you mix in a little bit of material as well?
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I mix in a thickener called '5X,' instead [br]of using Cabosil or something fumey
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to thicken it, it's just a couple drops[br]of this liquid and it gets thick.
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And then you're, in terms of making the mold,[br]you're just doing a thin coating
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of silicone, just to get into those grooves[br]and make sure it's a strong relief,
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a perfect copy, and then just [br]slather that silicone on top.
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Yeah. I kinda smeared it into[br]the grooves of my fingertip.
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And then built it up so that[br]it has some thickness.
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Alright, so now it's time to [br]wait until this cures.
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Ok Frank, while the silicone mold[br]on your finger is curing,
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Let's begin experiment 2.
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Another way we thought we could[br]'spoof' Touch I.D. is
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if someone left their fingerprint on[br]a piece of glass for example,
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and we'd captured it photographically.[br]So we had you put you finger right here
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on some baby powder and put it [br]right on this piece of foam-core.
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This is basically the equivalent of putting [br]your greasy finger on glass, for example.
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Which is what the 'C.C.C.' did.[br]So, we took a photo of this,
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took a macro photo, blew it up,[br]very high resolution
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with my camera and then[br]processed it on a computer
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to scale it, to be exactly the size[br]of your finger.
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Measured it, it was about an inch tall.[br]And then I laser etched it.
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So I tried several variations, laser [br]etched of different relief.
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With laser etching y'know-[br]Different depths.
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Yeah. Different depths, changed the colour,[br]inverted it, uhh but basically
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used this as a substitute for your finger[br]and then mold on top of that,
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or cast on top of that. We're not sure[br]if that's going to work either,
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but we also want to create[br]the molds here.
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And also using silicone.[br]Sure.
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I ran some 'Body Double' onto [br]these etched parts,
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to see how they come out and some of them [br]look like they're actually going to work.
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So what we want to do is[br]we want to dust them with graphite.
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And then, put some more silicone[br]on top of this, and then
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we can use it as kind-of[br]a finger pad,
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You know, because it's thin and flexible[br]and maybe that.. that will work.
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So we're going to do some mental[br]gymnastics here,
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the photo of your fingerprint, which[br]I blew up and high-contrasted,
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made sure that all the curves[br]were very visible.
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That was the reverse of [br]what your fingerprint actually is.
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So without inverting it, without flipping [br]it back, just etching that,
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basically, what you're going to get[br]on the etch is what you would get
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on the foam-core here or a [br]fingerprint on the phone.
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And so when we create the silicone[br]casting on top of that,
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this isn't the mold, this is the fingerprint.[br]Yes.
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Ok. So put some graphite on there[br]and we'll mix up some more 'Body Double'
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And we'll add a little graphite[br]into the 'Body Double'
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Just to help with capacitance maybe, I dunno.
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It's black like tar!
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So the cast of your finger is about done.[br]Yeah, this is all solid now so..
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What you do is just kind of[br]peel it off.
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Because it's in all the detail of my[br]finger it's got a lot of suction.
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That's good.[br]Yeah.
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Take a look at that, you can flip it inside-out[br]and see all those ridges and grooves,
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There you go Internet, copy this[br]and go hack all my passwords.
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That's a good looking fingerprint.
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So what we'll do is put a few [br]different materials into this.
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But, we have another copy of the fingerprint[br]etched at a different DPI
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and we'll smear some more stuff into that.[br]Yeah.
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My question and my concern with the [br]laser etching is the resolution you can etch.
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And you can change that on the laser cutter,[br]so I have 500ppi, 600ppi and 800ppi.
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ppi or dpi?[br]It's.. sort of the same, points per inch.
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ok.
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And the higher we go the more chance[br]that the acrylic will get fused into the crevices
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and the dust will take away some of the detail,[br]but that- you can recognise it as a fingerprint
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I just don't know if it will be [br]good enough to fool Touch I.D.
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You don't know if we're good enough to fool Touch I.D?
0:09:05.716,0:09:08.010
Are we smarter than Apple?[br]Probably not.
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Alright, back to experiment 1, [br]the hand-cast - the finger cast[br]
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and you're going to put some silicone in there.[br]Yeah.
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So first thing I'm going to do is[br]hit it with a little bit of release
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This is just 'Ease-release 200.'[br]
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We actually haven't seen you use[br]mold remover before,
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this extends the life of your molds.
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Yeah, if you want to cast like Urethane[br]parts or something like that
0:09:39.615,0:09:43.321
this works great, it just happens[br]to be what I have sitting around right now.
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I want to put release on here because [br]nothing sticks to silicone but other silicone,
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but we're putting silicone in here so..[br]Oh..
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So I'm spraying it in and just[br]sort of rubbing it around
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So what I'm going to do on this first[br]is I'll rub some graphite into the surface
0:10:04.437,0:10:06.186
kind of like how I dusted the etching.[br]
0:10:06.414,0:10:09.450
You've gotta be careful, this is really tricky[br]because we want just enough graphite
0:10:09.655,0:10:15.821
to activate Touch I.D, and the activation[br]I think happens around the ring of the home button
0:10:16.030,0:10:20.695
But we don't want too much graphite, because[br]that might take away the detail.
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I want to Imagine Apple engineers watching[br]this and just laughing their butts off.
0:10:25.638,0:10:30.260
'Those fools, those morons,[br]they'll never do it.'
0:10:32.905,0:10:35.854
So this is the rubber I'm going to use,[br]the 10 Durometer,
0:10:36.077,0:10:38.250
for this stuff we were using the 'Body Double'[br]because it was real thin and
0:10:38.477,0:10:40.736
it'll just serve as a pad you[br]put on your finger.
0:10:40.937,0:10:45.702
So this one- I'll make kind of a full finger,[br]sort of like this stuff.
0:10:45.982,0:10:50.573
And I'll do another one that's just[br]kind of a pad we can put on another finger.
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Alright, so the castings are done.[br]The silicone has cured,
0:11:08.492,0:11:10.719
It's time to pop 'em out of the molds.[br]Yep.
0:11:11.030,0:11:13.792
So what we have here, [br]we actually did more than 1.
0:11:14.051,0:11:20.015
A silicone casting from a silicone mold,[br]pops out and how do the fingerprints look?
0:11:20.207,0:11:25.941
I think that the detail is really great, it's[br]about as exact of a replica of a fingerprint
0:11:26.158,0:11:29.458
as you can get from your fingerprint, but[br]we'll see if it reads on the Touch I.D.
0:11:29.619,0:11:32.780
And then also the silicone we used on top[br]of the laser etching,
0:11:32.933,0:11:37.645
we pulled those out as well. And the[br]advantage of these is that
0:11:37.814,0:11:42.010
if someone wanted to 'spoof' someone elses[br]fingerprint, this is more likely
0:11:42.157,0:11:45.338
how they would be able to do it. They're not[br]going to be able to get someone to
0:11:45.501,0:11:47.984
put their finger in a mold for [br]15-20 minutes.
0:11:48.200,0:11:50.012
They're more likely to take a photo[br]of their fingerprint,
0:11:50.193,0:11:52.000
from a touchpad or piece of glass[br]or something,
0:11:52.190,0:11:54.637
and see if they can laser etch it.[br]Yeah.
0:11:54.867,0:11:58.081
Plus these are thinner.[br]Yeah, that'll help with the capacitance.
0:11:58.256,0:12:03.020
It's like if you're wearing a rubber glove[br]you can still activate your phone.
0:12:03.261,0:12:06.797
So let's do a first test which is [br]a test of capacitance.
0:12:06.938,0:12:12.077
Let's unlock this phone,[br]I'll just type in the passcode..
0:12:12.089,0:12:20.421
And show that using the graphite infused[br]silicone works, just to manipulate the touch screen.
0:12:20.581,0:12:22.875
Alright, that seems to be working.
0:12:24.312,0:12:32.199
Let's try with this now, this is Franks finger.[br]Oh, no capacitance.
0:12:32.784,0:12:37.995
Umm.. we could try wetting it or..-[br]Putting some graphite on top of it.
0:12:37.995,0:12:39.716
Yeah we could try those two things.
0:12:42.325,0:12:45.376
This is tough because water[br]just beads off silicone.
0:12:47.980,0:12:51.574
Ok, a wet finger, [br]a wet finger-casting.
0:12:52.117,0:12:54.407
That activates the screen.[br]Mm-hmm.
0:12:54.407,0:12:58.347
But we don't know how that [br]will affect Touch I.D.
0:12:58.347,0:13:02.161
So this one's dusted with extra graphite.[br]We'll see if that works.
0:13:02.815,0:13:04.583
It does![br]Great.
0:13:04.745,0:13:08.952
So capacitance is working, so here[br]comes the moment of truth.
0:13:09.068,0:13:11.231
Or failure.[br]Or failure.
0:13:11.243,0:13:12.183
(laughs)
0:13:12.408,0:13:15.073
The moment of failure, [br]potential failure. We'll call it that.
0:13:15.586,0:13:19.313
I'll hit the top button on the screen,[br]it's going to want to unlock.
0:13:19.671,0:13:24.473
And we'll show that, for example,[br]my finger doesn't unlock this.
0:13:25.733,0:13:30.699
Your finger does unlock.[br]My finger that was molded does unlock.
0:13:33.602,0:13:39.286
And now let's put that on top of there.[br](gasp)
0:13:39.323,0:13:40.935
[br]It unlocked![br]It unlocked!
0:13:42.302,0:13:45.702
Holy moly![br]We fuckin' did it!
0:13:45.702,0:13:48.291
I'm genuinely shocked, I didn't[br]think it was going to work.
0:13:48.834,0:13:51.089
Let's see if we can duplicate that.[br]Alright..
0:13:54.291,0:13:59.031
Let's do- let's prove that this [br]finger here does not work.
0:14:01.387,0:14:04.958
Try again[br]Does not work, ok.
0:14:05.196,0:14:08.058
(gasp!)[br]We did it.
0:14:08.921,0:14:12.178
(laughs)[br]Huge success.
0:14:12.927,0:14:15.238
Test 1, experiment 1;[br]Success.
0:14:15.807,0:14:17.585
I'm going to try it on my finger.
0:14:22.552,0:14:24.555
So let's talk about what did work.[br]Ok.
0:14:25.047,0:14:30.636
Experiment 1: we did a silicone casting of your[br]finger, with a silicone mold
0:14:30.951,0:14:33.586
that you carefully made, also of [br]the same index finger.
0:14:33.860,0:14:37.771
Now with the silicone casting we infused[br]it with graphite, which by itself
0:14:37.952,0:14:43.326
didn't seem to activate the capacitance ring[br]on the Touch I.D sensor.
0:14:43.620,0:14:49.187
But by brushing graphite on top of it, [br]that actually made it register as a finger.
0:14:49.449,0:14:55.346
And, with one of our castings we were[br]able to unlock the phone.
0:14:55.942,0:15:01.384
And the cooler thing even, is that on new [br]iPhones 6 and 6+, is theoretically
0:15:01.565,0:15:05.896
more improved, the sensor on the [br]inside is higher resolution.
0:15:06.132,0:15:11.548
And even on the 6+, where we trained beforehand,[br]your index finger but not mine...
0:15:12.735,0:15:14.293
It unlocks!
0:15:14.905,0:15:17.321
So now I can unlock [br]Will's phone any time I want.
0:15:18.146,0:15:20.963
Well.. if your fingerprint was stored in it, yes.[br](laughs)
0:15:21.366,0:15:24.454
But the other thing we have to test of course[br]is the laser etching process.
0:15:24.696,0:15:30.985
This is taking a high resolution photograph[br]left on a surface, laser etching it
0:15:31.222,0:15:33.409
and then creating a[br]mold of that.
0:15:33.882,0:15:36.323
So we've cut out a bunch of our[br]laser etched fingers,
0:15:36.962,0:15:40.565
Let's go back to the 5-S, ok,[br]and let's see if that works.
0:15:43.280,0:15:47.789
So here I have your fingerprint [br]theoretically, on top of mine..
0:15:50.703,0:15:53.728
..'try again.'
0:15:55.689,0:15:57.968
Come on!..... do something!..
0:16:00.158,0:16:07.059
So unfortunately, the laser etched and then[br]cast silicone fingerprint doesn't work.
0:16:07.545,0:16:13.667
What's interesting is that it does recognise[br]on the Touch I.D, it is trying a fingerprint.
0:16:14.003,0:16:17.468
Which, if you put any other capacitive surface on there-[br]Like a hot-dog.
0:16:17.825,0:16:21.181
Right. It knows that that's not a finger,[br]so it wouldn't even try.
0:16:21.509,0:16:25.220
So we got it to try, we got it to fail,[br]but we couldn't get it to
0:16:25.400,0:16:28.016
recognise it as your finger.[br]Well..
0:16:28.351,0:16:31.213
At least we got one of them.[br]At least we got one of them.
0:16:31.553,0:16:35.904
This is really cool, we get to learn basically[br]how Touch I.D. works in practice.
0:16:36.154,0:16:39.780
We recognise it doesn't need a warm finger.[br]Mmhmm.
0:16:39.994,0:16:44.620
All you need is something that has[br]the fidelity, the resolution of your fingertip
0:16:44.769,0:16:48.868
and has enough capacitance to activate the ring.[br]Yeah.
0:16:49.036,0:16:53.360
So if your finger was chopped off, [br]theoretically, it would still work.
0:16:53.553,0:16:54.916
There you go.[br]There you go.
0:16:55.789,0:16:58.882
Touch I.D. tested, it's a fun project[br]with Frank Bellino
0:16:59.942,0:17:01.644
What else do you do? You do [br]a bunch of other tests here or-
0:17:02.000,0:17:05.309
Well, during the week, when I was at lunch[br]and stuff like that, I tried a bunch
0:17:05.479,0:17:08.661
of different things. One thing I did was [br]take a ball of clay and just push
0:17:08.869,0:17:12.470
my finger into it, to get a fingerprint in the clay,[br]and put silicone into there.
0:17:12.556,0:17:17.115
That didn't work either, these are attempts at[br]just doing a fingerprint in clay.
0:17:17.289,0:17:22.290
That's not enough resolution, the silicone [br]mold gets a better resolution.
0:17:22.335,0:17:24.202
So that's kind of the way to do that.
0:17:24.202,0:17:27.782
Try different ways and you know what?[br]If you have experience with special effects
0:17:27.868,0:17:34.181
or casting.. or new ideas.. the Choas [br]Compter Club, they posted their instructions
0:17:34.374,0:17:39.873
we'd love to see your videos or your attempts[br]at 'spoofing' Touch I.D.
0:17:40.069,0:17:41.803
But this was a lot of fun![br]Yeah it was cool
0:17:41.966,0:17:46.837
I've never- I've always thought about this but[br]never really tried it, but now we kind of know
0:17:47.033,0:17:48.510
sort of what works.[br]It's a fun experiment.
0:17:48.672,0:17:52.448
Touch I.D tested here on Tested.[br]Thank you Franky Belito,
0:17:52.609,0:17:54.674
Thank you to premium members for[br]bringing this video
0:17:54.845,0:17:57.488
And thanks 'Smooth on' for giving [br]us stuff to fool with.
0:17:57.704,0:18:01.848
Thanks 'Smooth on' for materials again, we used[br]'Body Double,' we used 'Dragon skin,'
0:18:02.015,0:18:06.970
and they have a lot of materials. It's fun stuff[br]and you'll find more of this stuff on Tested,
0:18:07.097,0:18:11.259
Subscribe to our Youtube channel[br]and we'll see you next time. bye.