I have previously written an app before in Unity that allows the user to draw onto a 'wall' - but in this instance I need a more responsive solution with larger textures (for a drawing game for Android where the user creates the game objects - similar to Drawn to Life - 2D game).

... so I was just wondering if anyone has done something similar with good results (am currently developing in Java on Android but being able to use Unity will speed things up x2).

Appreciate any hints/suggestions, J