Draw signature and other sketch functions

Hi,

I am creating an app where the user can sketch with finger Chinese Characters on the phone screen. The most useful function that I have found so far is the “Draw signature” -function. However, when drawing the signature, the drawing area is quite small. Is there a way to adjust the size of the drawing area? Also, is anyone aware of other functionalities that enable drawing on the screen?

Br,
Felix

did you find something?

Nothing yet. Any ideas?

I thought about change the background color so that at least the user has a base to write from, but I couldn’t find anything about it.