Arduino MEGA2560 USB via the resident 16U - interface with Tablet

I control the code on both the tablet and the Arduino, and nothing else will ever be connected. Any recommendations on moving data back and forth?

This has also been posted under protocols. I’m putting code in the tablet and the Arduino, and nothing else will ever be attached to either. I’m new to Arduino. Any suggestions or experiences.

Aclimay:
This has also been posted under protocols.

Telling us you cross posted:

doesn't make it OK.

In the future chose the best forum section and create only one thread per subject.

Would the MEGA16u2 on the Arduino MEGA2560 do this?

@Aclimay, do not cross-post. Threads merged.

@Aclimay, do not hijack. Thread split and merged.