OneNote for Windows 8/RT devices just got updated to support finger painting. As more users expressed the need to be able to draw on the touch devices that do not ship with a pen, this update allows you to draw with your finger!
Simply tap the screen, open the radial menu and select “Draw”.
From here you can get creative; choose pen colors, customize your thickness, and store these combinations as a ‘favorite’ pen. Once you are done drawing, open the radial menu and select “Exit Draw”.
Download it from OneNote for Windows Store.