You could also try liquid latex, used to make casts by modellers. Build the layers up over time.
You could also try liquid latex, used to make casts by modellers. Build the layers up over time.
… or good ol' "gummy candy" gelatin
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jaclaz
I was just making sure you didn't spend alot of time recreating a thumbprint, without ensuring you were using the right print.
Depending on the case etc if possible have you tried your own finger/thumb on the reader to make sure its reading ok? Again just to rule out the reader having a problem?
Ive looked at a S5 mini before and got round the fingerprint by eventually using / guessing the alternative password, this depends on what info you have on the user of the phone.
Have you had any luck getting the scanner to pick up your "replica" print yet?
If not were you able to rule out the scanner being faulty?
Have you had any luck getting the scanner to pick up your "replica" print yet?
If not were you able to rule out the scanner being faulty?
In fact it is not about using one finger or another. The sensor is not recognizing the 'glue'. If I touch it with my finger it will say that the fingerprint is invalid. With the glue replication…nothing!
jaclaz
It is entirely possible that your "modified" hack works fine or even better, but the original uses thin, "normal" wood glue fingerprint replica.
Meanwhile, I had a look at Karsten's videos. The iPhone edition covers the entire manufacturing process https://
They use graphite spray to achieve surface capacitivity.
I know crews who are into this, and that they are constantly experimenting with different glue mixtures. I just didn't know, whether for mechanical or dielectic reasons.
I know crews who are into this, and that they are constantly experimenting with different glue mixtures. I just didn't know, whether for mechanical or dielectic reasons.
Yep, and surely (as demonstrated in the now old article by Matsumoto et alia I posted a link to) each sensor may have its specific "likes" or "dislikes", my gut feelings/instinct tell me that the "original" gummy gelatin is probably the most similar to human flesh/skin in all regards, still at least in first experiments I would try to replicate EXACTLY what the guys that "invented" the specific hack introducing NO changes, the process does involve graphite spray, and the reason why is clearly described in the actual iPhone article
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A thin coat of graphite spray is applied to ensure an improved capacitive response. This also makes it easier to remove the fake fingerprint. Finally a thin film of white wood glue is smeared into the mold. After the glue cures the new fake fingerprint is ready for use.
However from that article it seems how the original method of casting directly in the print is less reliable than the "improved" (and "more complicated") cast made out of a photimpressed/etched PCB.
It is likely that the combined effect of a very thin "fake fingerprint" and "breathing on it" is the key in the successes (however reportedly less reliable than the "updated" method) and the show stopper in this case, and until the OP doesn't find a suitable printing material that allows for an easier "lifting" of a thinner casted thingy, is the excessive thickness.
jaclaz
Wow guys! I'm really enjoying this forum. Everybody here has been so technical! That's great!
I am having trouble to find transparency sheets for laser printers. So I tried another one and guess what? This time I can peel off the glue layer very easily! Great news!
My complaint right now is that the fake fingerprint is too shallow. I decided to print again using a thcker toner setting. Let's see what happens!
I'll only test my fake fingerprints on Sunday and I'll post my results here next week.
Let's cross our finger(print)s! lol
Just to illustrate progress until now. This is my fingerprint. It is capacitive enough so that the screen of a cell phone can feel it.
It keeps being too shallow. I think this will cause issues with the recognition… I needed something less shallow but I don't have that PCB technology!
The photo below shows the graphite version!
Can you do something to enhance the fingerprint in a similar manner to the glue trick you see on csi etc. AIUI the glue vapour binds to the oils in a print on a hard surface. Would glue bind to the graphite in a similar manner, if not could you introduce some oil to the raised edges from the print in someway and then try glue?
I'm trying to unlock the device but no success until now! (
Two possibilities here
1 - The 3 different fingerprints used are from the finger used but they have been taken like 15 years ago. But someone once told me that fingerprints don't change.
2 - Lack of relief on the glue layer. I would need to improve this.
Any tips?