Nakabayashi Smareco Notebook, B5 Size, 40 Sheets/80 Pages 7mm Line, Black (60774)
The smareco NOTE has "dividing marks" in the upper and right sections of the page. Fill in the marks on the sections you want to hide, load the smareco NOTE application, and take a picture of the page. You can now hide or reveal sections of the page on your smartphone with a single touch. Before using the smareco NOTE, download the smareco NOTE application to your smartphone through the "App Store" or "Google play" free of charge. The packaging is in Japanese.