Hardware primarily. They've done a great job with the latency as well, but if you close your eyes and write on the RM, it's almost like writing in a paper noteb

Hardware primarily. They've done a great job with the latency as well, but if you close your eyes and write on the RM, it's almost like writing in a paper notebook. It's the combination of the screen and the marker tips. As the marker tip gets worn out, the paper feeling gradually gets worse.