So we have a LeapStart book for the preschooler. I haven’t managed to work out how it works. It has a stylus that you touch things on the pages of books that you set into the leapstart. I can’t work out how it knows what page it’s on, they are too flimsy for any electronics in the pages. Any ideas? As far as I can see on the stylus it has a pressure sensor and some sort of visual sensor up by the pressure sensor.