title: Android SDK for fingerprint matching - External device
body: <p>I'm developing an Android application that uses U.are.U 4500 fingerprint reader to identify users. I already have a backend server, that uses SQL Server, to store and register user data and now I need my app to be able to read the user fingerprint and verify if this fingerprint matches any of the fingerprints on the database. Does anyone know a SDK that is able to do this comparison?</p>
  
  <p>I'm using asia.kanopi.fingerscan package to read the user fingerprint and I already have the scan working, now I only need to get this image and compare to the data on the SQL database. I saw a few answers here on StackOverflow telling me to use openCV library for Android, but none of them could give me any lead on how to do it.</p>
  
  <p>I based my development on this tutorial: <strong><a href="https://medium.com/touch4it/fingerprint-external-scanner-with-usb-database-sdk-64c3ec5ea82d" rel="noreferrer">https://medium.com/touch4it/fingerprint-external-scanner-with-usb-database-sdk-64c3ec5ea82d</a></strong>, but unfortunately I couldn't find the SDK IDKit Fingerprint SDK Mobile anywhere. </p>
  
  <p>How can I sucessufully match the image with the one stored on the database?</p>