How can I disable the camera's clicking sound?

That click is irritating and pointless to me. I understand they don't want people surreptiously photographing women's beavers on subways in Tokyo and such, but that is easily overridden by simply by turning off all the iPhone's sounds completely each time with the little button on the top of the left side of the phone.

My point is, I don't want to have to silence my phone each time, and then turn it back on again after taking some pictures, which I often forget to do. So how can I disable the silly camera sound without muting the entire iPhone each and every time I use the camera?