Next, an attacker will lift the fingerprint, place it on a plastic laminate, and then cast a finger to fit this mold. To open up a smartphone secured with a fingerprint, the attacker will first need to find a high-quality print, that contains a sufficient amount of specific patterns to open up the device. Similar to a capacitive one, it forms a map of the finger unique to the individual.Ĭreating a Fake Finger (Spoofing the Fingerprint) Basically, these will emit ultrasounds that will reflect back into the scanner. Ultrasonic scanners will make their appearance in the newest generation of smartphones.These are the ones used in smartphones and laptops. A capacitive scanner basically maps out these contact points and air gaps, resulting in an absolutely unique pattern. Print ridges directly touch the scanner, sending electrical current, while the valleys between print ridges create air gaps. A capacitive scanner works by measuring electrical signals sent from the finger to the scanner.An optical scanner takes a photo of the finger, identifies the print pattern, and then compiles it into an identification code.There are three types of fingerprint scanners: optical, capacitive, and ultrasound. Below are the most popular biometric technologies that have made their way into users’ hands. There are quite a few types of identifying a user by way of his own body. Advantages and Disadvantages of Biometric Authentication.Here’s what we will cover in this extensive explanation of biometric authentication, a fascinating technology with significant adoption in the present and huge potential in the future. For instance, you might have a slightly sweaty finger or a tiny, tiny scar that changes the print pattern.ĭesigning the process so that it doesn’t require an exact match greatly diminishes the chance of a false negative (the device doesn’t recognize your fingerprint) but also increases the odds that a fake fingerprint might be considered genuine. This is because it’s close to impossible for 2 biometric data to match 100%. The important thing to note is that the match between the two data sets has to be nearly identical but not exactly identical. ![]() If the two data are nearly identical, the device knows that “visitor” and “owner” are one and the same, and gives access to the person. How Does the Biometric Authentication Work?īiometric authentication works by comparing two sets of data: the first one is preset by the owner of the device, while the second one belongs to a device visitor. Biometric authentication goes one step further and uses that information to compare you against a database and enters your information in service. Specifically, identification asks, “who are you?” while authentication asks, “Are you who you say you are?” Biometric identification verifies you are you based on your body measurements. Now, although biometric systems can combine authentication and identification, there is a major difference between the two. In simpler words, biometrics are any metrics related to human features which make an individual different from other individuals. The word biometric is a combination of two words: bio (human) and metric (measurement). This process is used to control access to physical and digital resources, such as buildings, rooms, and different devices. Biometric authentication refers to the security procedure that involves the use of unique biological characteristics of individuals such as retinas, irises, voices, facial characteristics, and fingerprints in order to verify people are who they claim to be.
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