biometrics

问题 How to launch finger print enrollment settings screen(Add fingerprint screen) from my app? After enrolling finger print, is there any way to navigate back to my application? (with startActivityForResult) 回答1: After reading the docs, I found out that as of now, there is no such intent action available. I launched the security settings(where fingerprints option available) with the below Intent. startActivity(new Intent(android.provider.Settings.ACTION_SECURITY_SETTINGS)); 回答2: with API >= P

问题 How to launch finger print enrollment settings screen(Add fingerprint screen) from my app? After enrolling finger print, is there any way to navigate back to my application? (with startActivityForResult) 回答1: After reading the docs, I found out that as of now, there is no such intent action available. I launched the security settings(where fingerprints option available) with the below Intent. startActivity(new Intent(android.provider.Settings.ACTION_SECURITY_SETTINGS)); 回答2: with API >= P

问题 I have an application that is about to change in order to validate users by their finger prints. Basically, the logon window will be redesigned to lose the login name and password fields. In their place, the window will wait until someone puts his/her finger on a fingerprint scanner connected to the workstation. Since there are about 50,000 users, whose account data are stored in a Oracle server, the problem is what to save in the User table and how to select the correct user by using the

问题 This is a very specific question which will probably earn me the tumbleweed badge, but please answer if you can I've imported DigitalPersona sdk dll's as type libraries into Delphi and am trying to verify fingerprints which I've stored as serialized data in a database, it's working very awesomely. Enrollment seems to work fine, but I can't turn the binary data from the finger prints back into DPFPTemplate objects. I keep getting an OLEException every time I try to used the defaultinterface

问题 what's the proper way to capture biometric information (pressure, speed...) by signing with a stylus on a canvas developed in a JSP web Page 回答1: Alright, since no one else has attempted to answer this question, I shall elaborate on my comment and opefully it will serve as an answer to others as well. First, Java Server Pages (JSP) is a server-side language. It is meant to run on the web-server and not on the user's browser. The same goes for other server-side languages like PHP and ASP. So a

问题 I have the following values against FAR/FRR. i want to compute EER rates and then plot in matlab. FAR FRR 19.64 20 21.29 18.61 24.92 17.08 19.14 20.28 17.99 21.39 16.83 23.47 15.35 26.39 13.20 29.17 7.92 42.92 3.96 60.56 1.82 84.31 1.65 98.33 26.07 16.39 29.04 13.13 34.49 9.31 40.76 6.81 50.33 5.42 66.83 1.67 82.51 0.28 Is there any matlab function available to do this. can somebody explain this to me. Thanks. 回答1: Let me try to answer your question 1) For your data EER can be the mean/max

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 2 years ago . I am developing a project in C#, for which I want to login/authenticate a user using their fingerprint. I bought a ZK4500 Fingerprint scanner and got its SDK from http://www.zkteco.com/product/ZK4500_238.html. The SDK is in C++. So How can I integrate this SDK with my C# project

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 3 years ago . I would like to build an app which allows employees to scan fingerprint with the support of Android app. Right now most fingerprint API (Touch ID or Android Imprint) only allows login to app. Is there any 3rd party API that allows usage of API to collect fingerprint and attach to my employee record, and verify

问题 clc clear a = imread('004_1.bmp'); I2 = imcrop(a,[80 17 101 180]); [i,j]=size(I2); x_hist=sum(I2,1); y_hist=(sum(I2,2))'; x=1:j ; y=1:i; centx=sum(x.*x_hist)/sum(x_hist) centy=sum(y.*y_hist)/sum(y_hist) BW = edge(I2,'Canny',0.329); bw2 = imcomplement(BW); circle = int32([centx,centy,40]); shapeInserter = vision.ShapeInserter('Fill',false); release(shapeInserter); set(shapeInserter,'Shape','Circles'); K = step(shapeInserter,bw2,circle); figure, imshow(K) I have this program and I want to know

问题 FingerprintManager#isHardwareDetected() and FingerprintManager#hasEnrolledFingerprints(). Both of which are deprecated in Android 28. What else could I use in order to see if fingerprints are enrolled in this version? I saw this as an option. KeyguardManager keyguardManager = (KeyguardManager) getSystemService(KEYGUARD_SERVICE); if that option is ok, how to translate it into xamarin forms for example () FingerprintManagerCompat fpm= FingerprintManagerCompat.From(CrossCurrentActivity.Current