Apart from texting/tweeting on the smart phone, I believe the other most commonly performed action of today’s daily society is taking photo, or taking a selfie.

How many cameras one person has in average? Each one of us used to own a ‘point and shoot’ all automatic camera, some of us have a more sophisticated compact one, other has a DSLR, or many of us have them all. But ultimately, everyone will have a camera in his phone. No more carrying heavy equipment around, all we need is to take out our phone and take a snap shot. Today, we take pictures of almost everything,