touch-id

问题 I'm currently developing an iOS app that enables users to log in to the app using TouchID, but firstly they must set up a password inside the app first. Problem is, to show the setup password option to enable the TouchID login, I need to detect if the iOS device supports TouchID. Using the LAContext and canEvaluatePolicy (like the answers in here If Device Supports Touch ID), I am able to determine whether the current device supports TouchID if the user has set up passcode on their iOS device

问题 I used touch Id plugin in my IOS Application by following below URL: https://www.ibm.com/developerworks/community/blogs/worklightsmobileplayground/entry/touchid_authentication_with_worklight?lang=en I implemented plugin properly and it is working. I want to change in the plugin code such that the Touch ID default popup should be removed but the touch authentication should work. Please suggest on this. 回答1: In my opinion you are attempting to subvert the way TouchID works, and that is a big no

问题 The iOS 9 release notes indicate that a second (or subsequent) unlock with the same finger will return a value. This is useful for determining if an iPhone may be shared among different users. ... and adapting PIN codes as necessary. (for example, a mother sharing a phone with a child, both are touch enrolled) From the release notes: Support for reusable Touch ID matches. A match from the previous phone unlock can be used by evaluateAccessControl: and evaluatePolicy:localizedReason:reply:.

问题 There's a LA service in my app that uses TouchID pretty much as usual. The problem is that I want to change what is written on the alert that shows up when touchId authentication is prompted. First it shows what I declare in reason string, than if auth fails, it only changes title to 'Repeat', but body stays the same. Is there any chance to change the alert's body for a different message when auth fails? I tried changing reason string but no effect. This project is created using Xamarin, but

问题 I am currently working on a mobile application for (Android, ios), which has the following requirement. Please tell me whether I can use the inbuilt finger print reader on latest smart phone, tablet to achieve my requirement. I have a HRM System running on cloud, where I have the employee details, Now i am developing an mobile app for employee time attendance, basically application will work in this following steps. When employee open the app, it will show a finger print login. Employee will

问题 Is it possible to cancel the TouchID alert dialog programmatically after the LAContext.evaluatePolicy call? If yes: how? 回答1: Not every API Apple publishes makes it into the documentation on developer.apple.com (or in Xcode's docs viewer). The API diffs list public APIs, so anything you see there is in the header files (see LocalAuthentication/LAContext.h ) and the Swift interfaces generated from those headers. And anything that's in the headers is a public API, so you're free to call it.

问题 Our app saves and retrieves items from Keychain for authentication using biometrics. On the 3rd incorrect attempt, I'm getting redirected onto device PIN code. Instead would like to prompt a message saying 3 incorrect tries. Code for retrieving the items OSStatus status = SecItemCopyMatching((__bridge CFDictionaryRef)(query), &dataTypeRef); Saw the expected behaviour with Bank of America app, where it shows a message that user need to login manually after 3 incorrect tries 回答1: I assume you

问题 When user scanned his finger, i want to learn which finger is printed, middle or second or nth. Is it possible on IOS/CORDOVA or do you have an hack for it? 回答1: While it is possible for a user to label their finger scans that is optional and un-reliable. Other than that I don't believe the software can detect which finger; even pet paws have even registered. Further iOS does not keep the scanned finger print but that information may not help you. 回答2: Yes an no. It is not possible to do this

问题 I am trying to ensure that the iOS app that I am working on is accessible and am trying to implement VoiceOver to ensure this. One strange thing that I cannot find any help for is when the Touch ID view is displayed (in my case for signing into the app). VoiceOver pronounces ID as a word and not I.D. I have tried implementing the accessibility attributes to both NSString and the LAContext object but neither seem to change what is read out by VoiceOver. Code snippets below: LAContext *context

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 4 years ago . I want to make an unique string or hash via Touch ID on iPhones in Swift. I search a lot about it but I didn't find a solution to make it. 回答1: you can NOT do this. you can use universally unique identifier (UUID) of an ios Device. let uuid = NSUUID().UUIDString or generate your own unique