Fingerprint is your personal imprint and very well suited for identification. But it is easy for the expert to forge fingerprints. With relatively simple methods, they can be copied from the smooth surfaces and transferred to plastic as silicone. A false fingerprint can thus be threaded on a finger in order to trick fingeravtrykksensoren.
Needed better security methods
such loopholes have to be sealed before fingeravtrykkgjenkjenning can be automated. Therefore, it is currently necessary to monitor the registration of fingerprints when it is used as the identifiseringsmetoder, such as at airports.
– There is a need for better methods to enhance the security, ” says Ctirad Sousedik by Biometrilaboratoriet at NTNU. Newer modern passports have registered the fingerprints digitally. This is compared with the image provided from the fingerprint sensor in the control.
Sousedik may now have found a solution to the security challenge. He has developed a software that detects 3D image of your finger. It will ensure that the fingerprint that is emitted is real, not a silikonforfalskning.
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Penetrates deep below the surface
Biometrics is the measurement of biological patterns. The research field deals with the human, biological characteristics and patterns, such as fingerprints, iris, øreform, voice, gait, or how you type on the keyboard. There are many traits that are unique to just you, but it is still a big challenge to reveal the attempts of cheating. Sousediks research goes right in the centre of the major theme of the biometrifeltet for the time: to ensure that the biological patterns that are detected originate from the people, not fakes.
Especially when fingerprints attempt to trick the systems. This is simply because traditional fingeravtrykkssensorer detects a two-dimensional image, the surface of the fingerprint. Ctirad Sousedik has therefore developed a fingerprint reader that "looks" down into the deeper layers of the skin and creates a three-dimensional image of skin texture. The technology is called Optical Coherence Tomography (OCT).
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Additional benefits of 3D-fingerprint
– By penetrating under the skin, we can see several structures, such as sweat glands. It will not, of course, be possible to falsify. In this way we have the opportunity to offer a higher level of security on fingerprints as ID, ” says Sousedik.
The new technology has several advantages. Two-dimensional fingerprint readers are sensitive to both sweaty fingers or dry fingers.
– With a 3D-scanner to bypass the we issue, and it becomes easier to take good images of the fingerprint, explains Sousedik.
It also happens that people who do not want to be identified, files, or scratch up the fingerprint her and try to damage skin in order to hide the marks. With the 3D scanner plays minor role in how things are on the fingerens surface. The structures of the underhuden is visible no matter.
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Relevant for border controls
today is the passport photo the main method, but most often it requires a manual passkontrollør that compare the person and the image.
Millions of people crosses the border crossings daily. It is easy to take the wrong for passkontrollørene when a see a face for the first time, and it will compare with a photo that may have been taken years ago, with more or less beard, glasses and hair.
When the method to ensure the 3D fingerprints are in place, is it possible to automate more of the checks at airports and other border crossings, and time and resources can be saved.
the Research project is happening in collaboration with The Federal Office for Information Security in Germany.
see also:
Some will steal from you
Stock hackermat of encryption
Faster flyplasskø with face detection
