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In modern society, mobile phone and diverse cards become essential items to bring when people go out. The busy life in city requires people to obtain latest news and have close connection with others. Cards play different roles in our lives, from the payer to the proof of identify. Moreover, with the widespread of digital camera, more and more people love to capture details of life, and cameras gradually become accompanied belongings. Those who know shooting skills and care about the quality of photogragh, like to carry lens with them for different needs when photographing.
Having all these things in bag definitely increases the burden on people economically and physically. People would like to reduce their personal luggages as possible. According to the above-mentioned problems, we can combine parts of the functions of DC, lens, mobile phone and cards to a card, and realize the dream of easy life that only need to bring a card when going out.