Here comes the second Etch-A-Sketch we spotted today, this one is for Playstation Portable and created by monkeykong.

How to use:

-D-pad for horizontal movement and face buttons [] and O for vertical movement to replicate the real thing.
-R “shakes” the Etch A Sketch, leaving the cursor in the same place that you left it.
-You can also press SELECT for an unlimited number of screenshots, to be saved in ms0/PSP/GAME[150]/EtchASketch/Applications/EtchASketch.

http://forums.qj.net/psp-development-forum/159388-release-etch-sketch-r1.html