Why is it smart? For starters, it will be able to translate what you have written down onto the screen, which is useful when you are somewhere where there is no way for you to tote a tablet or an electronic notebook around. It “writes” on just about any surface, and will be able to transcribe your handwriting without the need for an Internet connection.
Before it achieves such a level of mastery over your handwriting, you will need to train it – and that is done by writing on 2 sheets of A4 paper so that the pattern recognition algorithm within picks up all your nuances and handwriting mojo, in order to have it function as accurately as possible. This analysis of handwriting metrics will still need some level of improvement, but this is not the first, and neither is it the last time that we see a smart pen of sorts hit the showfloor.