[CROSSMATCH] U.are.U SDK Platform Guide For Android
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U.are.U SDK v3 ® Platform Guide for Android Copyright © 2015-2016 Crossmatch. All rights reserved. Specifications are subject to change without prior notice. The Crossmatch logo, Cross Match®, Crossmatch® and DigitalPersona® are trademarks or registered trademarks of Cross Match Technologies, Inc. in the United States and other countries. DigitalPersona®, TouchChip®, Eikon®, U.are.U® and FingerJet™ are trademarks or registered trademarks of DigitalPersona, Inc., which is owned by the parent company of Cross Match Technologies, Inc. All other brand and product names are trademarks or registered trademarks of their respective owners. Revised: November 10, 2016 (v3.0) Contents INT ROD UCTIO N 4 G e t t i n g U p d a t e d D o c u m e n t a t i o n . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . 4 INSTALLATION 5 I n s t a l l i n g o n t h e D e v e l o p m e n t S y s t e m . . . . .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . 5 I n s t a l l i n g o n t h e T a r g e t H a r d w a r e . . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . 6 DEVELOPING APPLICATIONS WITH C/C++ 7 P r e - R e q u i s it e s . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . 7 S y s t e m R e q u i r e m e n t s . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . 7 D e v e l o p m e n t S y s t e m . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . 7 T a r g e t H ar d w a r e ( A n d r oi d - B a s e d D e v i c e ) .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . 7 T h e S a m p l e A p p l ic a t i o n s . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . 7 B u i l d i n g t h e S a m p l e A p p l i c a t i o n s . . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . 7 R u n n i n g t h e U a r e U S a m p l e A p p l i c at i o n . . . . .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . 8 R u n n i n g t h e U a r e U C a p t u r e O n l y A p p l i c a t i o n . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . 14 DEVELOPING APPLICATIONS WITH JAVA 20 P r e - R e q u i s it e s . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . S y s t e m R e q u i r e m e n t s . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . D e v e l o p m e n t S y s t e m . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . T a r g e t H ar d w a r e ( A n d r oi d - B a s e d D e v i c e ) .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . I n s t a l l i n g o n t h e T a r g e t H a r d w a r e . . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . T h e J a v a S a m p l e A p p l i c a t i o n . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . S e l e c t i n g a R e a d e r . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . E n r ol l i n g a F i n g e r . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . I d e n t i f y i n g a F i n g e r p r i n t . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . V e r i f y i n g a F i n g e r p r i n t . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . U s i n g t h e C a p t u r e an d S t r e a m i n g F e a t u r e . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . 20 20 20 20 20 20 22 24 25 26 27 U.are.U SDK - Platform Guide for Android 3 Introduction T HIS CHAPTER PROVIDES AN OVERVIEW OF THE CHAPTERS IN THE U . ARE. U SDK PLATFORM GUIDE FOR A NDROID BASED PLATFORMS . This manual describes how to use the U.are.U SDK to develop applications that will run on the Android platform. The U.are.U SDK is available for multiple platforms and this document describes information specific to developing applications that will run on Android-based platforms. This SDK is available in two editions: the U.are.U SDK for Android (supporting optical readers only) and the U.are.U SDK for Android with TouchChip Support (for use with both optical and silicon readers). The material in this document applies to both editions unless otherwise noted. Introduction (this chapter) describes how to get the latest version of this documentation. Installation provides instructions for installing on your development system. Developing Applications with C/C++ lists system requirements for developing and running applications in C/C++ and describes the sample application. Developing Applications with Java lists system requirements for developing and running applications using Java, provides additional installation instructions and describes the Java sample application. For a detailed description of the SDK, consult the U.are.U SDK Developer Guide. Getting Updated Documentation If you are viewing this guide from the download package for the U.are.U SDK, you may want to check online at our website for an updated version of this document at http://www.crossmatch.com/Support/Reference-Material/SDK-Reference-Material/ U.are.U SDK - Platform Guide for Android 4 Installation T HIS CHAPTER PROVIDES INSTRUCTIONS ON INSTALLING THE U. ARE.U SDK ON THE DEVELOPMENT AND TARGET SYSTEMS . Except as noted in the platform/language-specific chapters, the installation process is the same for all Android development. There are two steps to the installation: • Installing on the development system • Installing on the device (the target hardware) These steps are described below. Installing on the Development System To install the SDK on an Intel-based Linux development system: 1. Unpack CM-UareU-3.0-.tar.gz into a directory. 2. Go to the directory where you unpacked the files. 3. Run setup. 4. Follow the prompts as they appear. The installer copies all necessary files to the selected folder. The files installed on the developer’s machine are located in the following folders within the main product folder: Folder Contents Include Header files for C/C++ API. Android/docs End user license agreement (EULA) plus documentation: SDK Developer Guide - describes all APIs Android/bin/android-14/arch-arm Platform Guide for Android - Android-specific details C_API - Doxygen for C/C++ API Java_API - Javadoc for Java API Drivers for U.are.U fingerprint readers Runtime files for: arm - C/C++ development for ARM processors Android/Samples Source files for sample applications: UareUSample - C/C++ sample U.are.U SDK - Platform Guide for Android java - Java JAR file UareUCaptureOnly - C/C++ sample that demonstrates only capture UareUSampleJava - Java sample 5 Installation Folder Android/Samples/bin Contents Executables for sample applications: UareUSample - C/C++ sample Android/bin/android-14/arch-arm - and Android/Samples/UareUSampleJava/libs/armeabi UareUCaptureOnly - C/C++ sample that demonstrates only capture UareUSampleJava - Java sample TouchChip device support libdpfpdd_tcd58.so Installed only with the U.are.U SDK for Android TouchChip Support Edition. I n s t a l l i n g o n t h e Ta r g e t H a r d w a re C/C++ application See Building the Sample Applications on page 7. Java application See Installing on the Target Hardware on page 20. U.are.U SDK - Platform Guide for Android 6 Developing Applications with C/C++ THIS CHAPTER PROVIDES INFORMATION NECESSARY FOR DEVELOPING ANDROID APPLICATIONS IN C/C++ WITH THE U.ARE.U SDK. P re - R e q u i s i t e s This chapter assumes that you have a working knowledge of C/C++ and that you know how to develop for applications that will run on Linux platforms and devices. S y s t e m R e q u i re m e n t s Development System The development system can be any Intel-based Linux system. The Android Native Development Kit (NDK) is required to develop native (C/C++) applications and libraries. Ta r g e t H a r d w a re ( A n d ro i d - B a s e d D e v i c e ) The Android-based device must have Android 4.4 or better installed and the UVC (also known as Video4Linux) kernel driver enabled. You must have root privileges on the Android device in order to develop and run C/C++ applications and samples. A USB port in host mode is required. The file sizes are (in Kb): Android API Level 14 Capture runtime (drivers + SDK layer) 580 Fingerprint recognition runtime 460 In addition, the device must have 16 MB free memory. The SDK works on a variety of hardware and is intended to have a small footprint so that it can run even on minimal hardware. Less capable hardware will work, but response time may not be optimal. The Sample Applications U.are.U SDK includes sample applications to demonstrate the features of the SDK. The sample applications are located in subfolders of the /urusdk-android/Android/Samples folder: • The UareUCaptureOnly subdirectory contains the sources of the sample application that demonstrates fingerprint capture. This application does not have any dependencies on the FingerJet engine libraries. The UareUSample subdirectory contains the source for the sample application that demonstrates the full functionality of the SDK: fingerprint capture, feature extraction and verification, identification and enrollment of fingerprints. This application has dependencies on the capture and FingerJet Engine libraries. Building the Sample Applications UareUSample and UareUCaptureOnly are built in the same way. The makefile relies on the following environment variables: NDK and TOOLCHAIN. The default values are set assuming that the Android NDK is installed in the $HOME/ Android/android-ndk-r8d directory and the development system is Linux-x86. Modify the makefile or set the environment variables according to the actual locations of the NDK directory and the toolchain directory. Once those are set, you can build the sample application with the make command. U.are.U SDK - Platform Guide for Android 7 Developing Applications with C/C++ R u n n i n g t h e U a re U S a m p l e A p p l i c a t i o n The UareUSample application demonstrates the Capture API and the FingerJet Engine API. It is a console application - it does not require any graphic libraries. However it requires root privileges in order to access /dev/videoX devices, and it requires the adb shell or an ssh connection to run. In addition, the Gallery app (installed by default on most Android devices) must be disabled to avoid interruption of the sample. To disable the Gallery app, navigate on your device’s display to Settings->Apps->Gallery App and click the Disable button. To run theUareUSample application: 1. Establish the adb shell connection with the device: •adb shell 2. Type su to grant permission to the device 3. Create the directory where the libraries and application executable will be copied: •mkdir /data/dpsample 4. Exit the root •exit 5. Exit the shell and copy the libraries and executable to the created directory: •exit •adb push /urusdk-android/Android/bin/android-14/arch-arm/ /data/dpsample •adb push /urusdk-android/Android/Samples/bin/UareUSample /data/dpsample •adb push /urusdk-android/Android/Samples/bin/UareUCaptureOnly /data/dpsample 6. Reestablish adb shell connection with the device and change access permissions on the reader device. 7. Make sure that LD_LIBRARY_PATH points to the directory with SDK libraries: •adb shell •cd /data/dpsample •LD_LIBRARY_PATH=/data/dpsample ./UareUSample When you launch the application you will see the main menu, as shown below: First, select a fingerprint reader device to use with the application. After you press 1 and Enter to select the reader, the application will search for any fingerprint readers and display a list of the readers it finds, as shown below. U.are.U SDK - Platform Guide for Android 8 Developing Applications with C/C++ Choose the desired reader and press Enter to continue. Once a reader is selected, you will see a screen that shows information about the reader and its capabilities, as shown below. U.are.U SDK - Platform Guide for Android 9 Developing Applications with C/C++ To test verification, press 2 and press Enter. Follow the prompts on the screen as shown below and place your finger on the reader. You will see that the program extracts the fingerprint features. Touch the reader again and the sample application will extract the features of the second fingerprint and determine whether the fingerprints match or not. Touch your index finger as the first fingerprint and your middle finger as the second fingerprint and note that they do not match. Press Ctrl-C to return to the main menu. U.are.U SDK - Platform Guide for Android 10 Developing Applications with C/C++ To test identification, press 3 and Enter to start. Remember that identification matches a single fingerprint against a set of fingerprints. You will be prompted to place each of your fingers on the reader in turn, as shown below. When you have entered all of your fingerprints, you will be prompted to place any finger on the reader. Place one of your fingers on the reader to ensure that the fingerprint matches. Touch the reader with a finger from your other hand and ensure that it does NOT match. Press Ctrl-C to return to the main menu. U.are.U SDK - Platform Guide for Android 11 Developing Applications with C/C++ To test enrollment, press 4 and Enter to start. The enrollment test is to enroll a single finger. Follow the prompts on the screen (as shown below) and place your finger on the reader when prompted. Then when prompted, place the same finger on the reader again. It typically takes four scans to get a good enrollment. If you place a different finger on the reader during enrollment, or if a scan is of poor quality, that scan will be dropped and the application will request additional finger scans in order to do a complete enrollment. U.are.U SDK - Platform Guide for Android 12 Developing Applications with C/C++ To test the Select Engine feature, select 5 and press Enter. The SDK includes two versions of the FingerJet matching engine, versions 6 and 7. Version 6 has a feature extractor certified by the National Institute of Standards and Technology’s Minex program (http://www.nist.gov/itl/iad/ig/minex.cfm), as interoperable with other Minex-certified feature extractors and matchers. Version 7 has both the feature extractor and matcher certified by the Minex program. However, the Minex-certified matcher is slower than the non-certified matcher in the version 6 FingerJet engine. For customers who do not have a requirement to use a Minex-certified matcher, we recommend using the version 6 FingerJet engine. Specifically, for customers who use DigitalPersona legacy template formats, the version 7 FingerJet engine does not provide any improvements in matching performance over version 6. This completes the demonstration of the UareUSample application. Press E to exit from the main menu. U.are.U SDK - Platform Guide for Android 13 Developing Applications with C/C++ R u n n i n g t h e U a re U C a p t u re O n l y A p p l i c a t i o n The UareUCaptureOnly application demonstrates the Capture API alone (no dependencies on the FingerJet Engine library). It is a console application - it does not require any graphic libraries. However it requires root privileges in order to access /dev/videoX devices, and it requires adb shell or an ssh connection to run. To run the UareUCaptureOnly application: 1. Establish an adb shell connection with the device: •adb shell 2. Type su to grant permission to the device 3. Create the directory where the libraries and application executable will be copied: •mkdir /data/dpsample 4. Exit root: •exit 5. Exit the shell and copy the libraries and executable to the created directory: •exit •adb push /urusdk-android/Android/bin/android-14/arch-arm/ libdpfpdd5000.so /data/dpsample •adb push /urusdk-android/Android/bin/android-14/arch-arm/ libdpfpdd.so /data/dpsample •adb push /urusdk-android/Android/bin/android-14/arch-arm/ libdpuvc.so /data/dpsample •adb push /urusdk-android/Android/Samples/bin/UareUCaptureOnly / data/dpsample 6. Reestablish the adb shell connection with the device and change access permissions on the reader device. 7. Make sure that LD_LIBRARY_PATH points to the directory with the SDK libraries: •adb shell •cd /data/dpsample •LD_LIBRARY_PATH=/data/dpsample ./UareUCaptureOnly When you launch the application you will see the main menu, as shown below: U.are.U SDK - Platform Guide for Android 14 Developing Applications with C/C++ Select a reader You must begin by selecting a fingerprint reader device to use with the application. After you press 1 to select the reader, the application will search for any readers and will display a list of any readers it finds, as shown below. Choose the desired reader and press Enter to continue. U.are.U SDK - Platform Guide for Android 15 Developing Applications with C/C++ Once a reader is selected, you will see a screen that shows information about the reader and its capabilities, as shown below. U.are.U SDK - Platform Guide for Android 16 Developing Applications with C/C++ Capture fingerprints Select 2 and press Enter to test the capture function of the sample application. The capture function simply puts the reader into fingerprint capture mode and waits until a fingerprint is detected, as shown in the picture below. Once you have finished testing the capture feature of the sample application, press Ctrl-C to return to the main menu. U.are.U SDK - Platform Guide for Android 17 Developing Applications with C/C++ Stream fingerprints To test the streaming feature (not available on all fingerprint readers), select 3 and press Enter. The streaming function simply puts the reader into fingerprint stream mode and waits until a fingerprint is detected, as shown in the picture below. As you place your finger on the reader, images will be captured and their quality score displayed. Press E to exit streaming mode. U.are.U SDK - Platform Guide for Android 18 Developing Applications with C/C++ Asynchronous Capture To test the Asynchronous Capture feature, select 4 and press Enter. This feature starts asynchronous capture on the opened reader device. It signals the device that a fingerprint is expected and then exits. This completes the demonstration of the UareUCaptureOnly application. Press E to exit from the main menu. U.are.U SDK - Platform Guide for Android 19 Developing Applications with Java THIS CHAPTER PROVIDES INFORMATION NECESSARY FOR DEVELOPING ANDROID APPLICATIONS IN JAVA WITH THE U.ARE.U SDK. P re - R e q u i s i t e s This chapter assumes that you have a working knowledge of Java and that you know how to develop for Linux readers. S y s t e m R e q u i re m e n t s Development System The development system may be a Windows or Linux system. The Android SDK is required to develop for Android. We also recommend that you download and use the Eclipse version that is included with the Android SDK. Ta r g e t H a r d w a re ( A n d ro i d - B a s e d D e v i c e ) The Android-based device must have Android 4.4 or better installed and the UVC (also known as Video4Linux) kernel driver enabled. A USB port in host mode is required. You don't have to have root privileges on the Android device. The SDK works on a variety of hardware and is intended to have a small footprint so that it can run even on minimal hardware. Less capable hardware will work, but response time may not be optimal. I n s t a l l i n g o n t h e Ta r g e t H a r d w a re To install the run-time environment on the target hardware platform: Note: If you are installing the U.are.U SDK for Android with TouchChip Support on a device where the edition without TouchChip Support was previously installed, remove the Java sample (DigitalPersona U are U SDK Sample) from the device before the new installation. 1. Enable USB debugging mode by navigating on your device’s display to Settings->DeveloperOptions->Enable USB debugging. 2. Connect the target hardware platform to the development system. 3. Establish an adb connection with the device. • adb install /urusdk-android/Android/Samples/bin/ UareUSampleJava.apk Installing the .apk file will install the following into its own application zone: • Driver and engine libraries • Java SDK wrapper • Java Sample Application If you install any of those components elsewhere on the target, you will have duplicate files installed. The intended architecture of Android is for all applications to have all dependencies secured within their own application zones. All dependencies, UIs and services are installed and started automatically. T h e Java S a m p l e A p p l i c a t i o n U.are.U SDK includes a sample application to demonstrate the features of the SDK when using the Java API. The sample application is located in the Samples folder. U.are.U SDK - Platform Guide for Android 20 Developing Applications with Java The application demonstrates the features of the SDK. When you launch the application, you see the main screen as shown below. The sample program demonstrates: • How to enroll a finger • How to identify a fingerprint • How to verify a fingerprint • The built-in control for enrollment • The built-in control for identification • How to use the streaming feature to display live fingerprint data on the screen U.are.U SDK - Platform Guide for Android 21 Developing Applications with Java Selecting a Reader To choose the reader, click on the Get Reader button. If there is only one reader attached, that reader will be selected automatically. If there are multiple readers, you will see a list of available readers and you can choose the desired device, as shown below. Click on the desired device and click on the Back button. To see the reader capabilities, click on the Get reader capabilities button. U.are.U SDK - Platform Guide for Android 22 Developing Applications with Java The capabilities will be displayed, as shown in the image below. Click on the Back button to return to the main screen. U.are.U SDK - Platform Guide for Android 23 Developing Applications with Java E n ro l l i n g a F i n g e r Click on Enrollment to begin enrolling a test subject. You will see a series of prompts to scan fingers for enrollment, as shown below. After the first finger is successfully scanned, you will be prompted to scan additional fingers until a sufficient number of high quality scans are complete. The number of fingers requested will vary depending on the image scans - the enrollment function will continue to request scans until an acceptable enrollment record has been created. When enrollment is complete, click Back to return to the main screen. U.are.U SDK - Platform Guide for Android 24 Developing Applications with Java Identifying a Fingerprint To test the identification feature, click on the Identification button. Recall that identification is a 1-to-many comparison where the application searches through all of the enrolled fingers to find a match. For this example, we do not have a stored database, so the sample application first prompts you to place your finger on the reader so that it can create a FMD. After a FMD is created, you will be prompted to place any finger on the reader to identify against the FMD that was just created. When you click the Identification button, you will be prompted to place your fingers on the reader. If you place an enrolled finger on the reader, you will see that a match was found. In the screen image below, we successfully identified a user. To exit identification mode, click on the Back button. U.are.U SDK - Platform Guide for Android 25 Developing Applications with Java Ve r i f y i n g a F i n g e r p r i n t To test the verification feature, click on the Verification button. Recall that verification is a 1-to-1 comparison where the application matches against a specified fingerprint. When you click the Verification button, you will be prompted to place your finger on the reader. As with the identification example above, in the screen below, we have successfully verified a user. To exit verification mode, click on the Back button. U.are.U SDK - Platform Guide for Android 26 Developing Applications with Java U s i n g t h e C a p t u re a n d St rea m i n g F e a t u re The sample application also demonstrates the streaming feature (on fingerprint readers that support that feature). To test capturing or streaming, from the main window, click on the Capture or Stream Image button. This puts the reader into capture/streaming mode and immediately the results are displayed in the window. For streaming mode, the window then becomes like a live window on the reader as it streams results. Placing a finger on the reader displays the streamed fingerprint, as shown below. For streaming, removing the finger shows a blank stream. To exit capture / streaming mode, click on Back. U.are.U SDK - Platform Guide for Android 27
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