Questions tagged [fingerprint]

Biometric modality that matches images of finger tips.

In forensic science, fingerprint identification is the analytical process of comparing two instances of friction ridge skin impressions from human fingers for identity verification. However, this technology may also work on almost any other region of skin on the human body.

In cybersecurity applications, a fingerprinting algorithm is a procedure that maps an arbitrarily large data item (such as a computer file) to a much shorter bit string, its fingerprint, which uniquely identifies the original data for all practical purposes. This is similar in the real-world case just as human fingerprints uniquely identify people. This digital fingerprint may be used for data deduplication purposes and data integrity verification.

A digital fingerprint may also refer to the pieces of information that are created by an individual during the use of some system. This can include cookies, inputs, selected options, etc. which can all be used to track a user's behavior and record any events.

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ios8 TouchID detection if fingerprint was added

Im digging into Apple's Touch ID, more precisely the Local Authenticator. The documentation as of now is pretty sparse. Its mainly just this: LAContext *myContext = [[LAContext alloc] init]; NSError *authError = nil; NSString…
Stas Stelle
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Convert Finger Print image to comparable template

I have a finger print scanner which gives me only an image of finger-print(it's SDK doesn't provide any functionality for "converting" them into template and for comparing these templates). My question is which approach should I use: look for an SDK…
Lev
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How to check if new finger was added?

I have an app with fingerprint authentication. It has been working fine till Android 8 was released. So the problem is that when I enroll new fingerprints there is no KeyPermanentlyInvalidatedException. So it happens only on Android 8, lower API's…
Vlad Melnikov
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Lock screen without disabling fingerprint

I have the following problem. I'm trying to make an app that locks the screen. The method via DevicePolicyManager works very well. So far so good. But when I lock my phone with DPM the fingerprint unlocking method is disabling and I have to enter…
ChesterKing
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Huawei P9 lite fingerprint support

Do you know if Huawei P9 lite does support Fingerprint? Is it possible to use Android 6.0 Fingerprint API or is it supported through some custom proprietary API (Huawei SDK)? We are evaluating to buy some smartphones and we would like to know how…
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FingerprintManagerCompat method had issues with Samsung devices

Problem java.lang.SecurityException: Permission Denial: getCurrentUser() from pid=#####, uid=##### requires android.permission.INTERACT_ACROSS_USERS at android.os.Parcel.readException(Parcel.java:1620) at…
AnxGotta
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Get data from Fingerprint device using PHP

I am working on attendance application using PHP and MySQL, I want to automate the attendance process by getting all data from fingerprint devices directly and import them into MySQL database through PHP script. I googled and found a script which…
CairoCoder
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How to Integrate fingerprint scanner in Java web application

I am fresher and I want to use fingerprint facility in my web application. I tried neurotechnology API but that API give me an error that no scanner found. Demo application which is given by device manufacturer is working successfully but not my…
Ganesh Jadhao
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Fingerprint reader on node.js through .NET SDK

I'm trying to get a node.js app to interact with a .NET SDK fingerprint reader called U.are.U. The SDK provides .dll (win32 and x64), Java and .NET libraries. I decided to use .NET for the simple of use, having all the interfaces ready to use and…
pocesar
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Fingerprint matching/recognition algorithms/implementations

Throughout this day I've been investing time into fingerprint matching/recognition algorithms/implementations in the world of programming. Though it's a bit of a vague because I can't seem to find anything really related. I'm basically looking for…
wvd
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OpenCV: Fingerprint Image and Compare Against Database

I have a database of images. When I take a new picture, I want to compare it against the images in this database and receive a similarity score (using OpenCV). This way I want to detect, if I have an image, which is very similar to the fresh…
Stefan
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How much time is locked Touch ID? "Biometry is locked out."

I'm trying to implement Touch ID login, but when user fails more than maximum attempts, I receive this error "Error Domain=com.apple.LocalAuthentication Code=-8 "Biometry is locked out." UserInfo={NSLocalizedDescription=Biometry is locked out.}" I…
Michel Marqués
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BadPaddingException when trying to decrypt Fingerprint API cypher

In my app, I save an encrypted version of the user's access code when they scan their finger in the initial setup [fingerprint enrollment]. When the user tries to unlock the app at a later time, I will attempt to decrypt this access code using the…
Thijs
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How to convert fingerprint to unique id to use it for searching in database?

I have fingerprint reader secugen and I have been able to get my application to control the fingerprint device by scanning fingerprints and I have been able to save them to mysql database! After saving the fingerprints to the db, I now want to…
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Android Fingerprint only allows 5 attempts at a period of time

I am developing an Android App that requires fingerprint to open an Activity. I just noticed when I unlock my phone using my fingerprint, the number of attempts to scan a fingerprint in my app only becomes 4. For example: Phone is unlocked Unlock…