So in that case would USB smart card reader do the job for it?
As you said you’ll be focusing on Android, good news - there is OSCam for Android too
I do have X Solo mini3 set-top box which runs OpenPLI. Even though it has integrated smart card reader, Conditional Access Module is software based - either OSCam or a few proprietary ones to choose from. Because OSCam is open source, that is my primary choice.
Is this GearBest link the direct way to pre-order your board?