fingerprint

Is it possible to get TouchID information and compare to a fingerprint database?

由 折月煮酒 提交于 2019-11-26 23:23:22
问题 I know that with LocalAuthentication , it is easy to embed TouchID in an iOS app. But is it possible to get the TouchID information and compare it to other fingerprint databases? 回答1: From Apple doc Touch ID doesn't store any images of your fingerprint. It stores only a mathematical representation of your fingerprint. It isn't possible for someone to reverse engineer your actual fingerprint image from this mathematical representation. The chip in your device also includes an advanced security

Fingerprint API for android phone

由 送分小仙女□ 提交于 2019-11-26 22:41:44
问题 I am new to fingerprint authentication in smartphones. As we know Samsung S5 currently supports fingerprint scanner. Is it possible to develop a custom application that can use the scanner to authenticate a user? I just need to know the identity of the user and if he has been authenticated correctly. My app can then take it from there and integrate with backend. 回答1: Google has now announced a generic fingerprint API for Android that can be utilised by any custom apps for authorisation and

How to check device compatibility for finger print authentication in android

由 守給你的承諾、 提交于 2019-11-26 19:27:57
问题 I am working with finger print authentication using android 6.0 api. My requirement is, if current device is supports finger print authentication, then I will go through finger print authentication else will use normal way to login the application. So, any one can tell me, how to check device compatibility for finger print authentication in android. Thanks in advance. 回答1: You have to use method isHardwareDetected on FingerprintManager class. Determine if fingerprint hardware is present and

Image fingerprint to compare similarity of many images

由 喜夏-厌秋 提交于 2019-11-26 13:53:17
I need to create fingerprints of many images (about 100.000 existing, 1000 new per day, RGB, JPEG, max size 800x800) to compare every image to every other image very fast. I can't use binary compare methods because also images which are nearly similar should be recognized. Best would be an existing library, but also some hints to existing algorithms would help me a lot. Normal hashing or CRC calculation algorithms do not work well with image data. The dimensional nature of the information must be taken into account. If you need extremely robust fingerprinting, such that affine transformations

Image fingerprint to compare similarity of many images

由 浪尽此生 提交于 2019-11-26 03:46:20
问题 I need to create fingerprints of many images (about 100.000 existing, 1000 new per day, RGB, JPEG, max size 800x800) to compare every image to every other image very fast. I can\'t use binary compare methods because also images which are nearly similar should be recognized. Best would be an existing library, but also some hints to existing algorithms would help me a lot. 回答1: Normal hashing or CRC calculation algorithms do not work well with image data. The dimensional nature of the

How can I get the MD5 fingerprint from Java's keytool, not only SHA-1?

由 匆匆过客 提交于 2019-11-26 03:05:01
问题 As I want to use Google maps in my application, I need the debug certificates\' MD5 fingerprint. I tried following.: (Here I copied the debug.keystore file from C:\\Documents and Settings\\Administrator.android in bin folder) C:\\Program Files\\Java\\jdk1.7.0\\bin>keytool -list -alias androiddebugkey -keystore debug.keystore -storepass android -keypass android But got the following results: androiddebugkey, May 27, 2011, PrivateKeyEntry,Certificate fingerprint (SHA1): \"some code\" However
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