Denso Wave in 1994. Data is encoded in QR optically readable format using QR code generators. So, QR code can be captured and decoded by smart phones. It is capable of handling up to several hundred times more information than the traditional bar codes unlike conventional bar codes are only capable of storing twenty digits. According to different versions of QR code, distinct information storage capacity may be used (see Fig. 2). The cost of information transfer via QR code is extremely low as compared with other technologies where specific hardware is always required [12]. Consequently, QR code is the most widely used information container that can be applied to different printed materials (e.g., posters, books or magazines) and places (e.g. bus stops, store windows, etc.).