Any way to press 2 buttons at the same time?

[ilovepi]

For those who won't understand what I am talking about, in the newest versions of gsphone there is a button next to the A and B button that when pressed signals the game to press both A+B at the same time. Few games I play on the PPSSPP requires these double button actions. Wondering if its possible to make a extra button that you can add which two button are signaled when pressed?

[GuilhermeGS2]

This will use much space on screen. And some games need different combinations.

[xsacha]

Just touch both with your finger(s). Multi-touch is supported up to 4 inputs AFAIK.