Doesn anyone know how to integrate card.io Android in Unity?

https://github.com/card-io/card.io-Android-source You can get the source code here and I think you should change some code by yourself.

Change the source code for unity callback use UnitySendMessage if nessasery. (Maybe after scan a card you need get the result or something?)

And then build it in Jar file or aar file http://addcomponent.com/android-native-plugin-unity/

When you get the aar file you should create a script to call the native method.

@EllisonLee I am trying to use card.io android sdk in one of our AR project to read a a card number when a card is placed under the AR screen but I am not sure how to use the SDK. If you can let me know some basic steps as to how I can test the SDK read functionality using my laptop camera, it would be of great help. Thanks in Advance.