How to make the home button triple click take a picture?

Someone told me it was possible to set it to do this but i don't know how. It might be a jailbreak feature but I'm not gonna do that so any1 know how to do this I have an iPhone 4S btw

I don't know if you can do that, look under accessibility options in the settings. I do know that if you hit the power and the home at the same time it takes a screenshot.