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二维条码是近几年发展起来的一种新型条码。一维条码由于信息含量有限而限制了其应用范围,二维条码除了具有一维条码的优点外,同时还具有存储量大、数据采集与识读方便、可靠性高、保密和防伪性强等优点,是目前世界各国都在大力推广的信息技术之一,已广泛应用于证照、物流、国防、电子商务、安检、通信及教育等许多领域。在国际上较早使用二维条码技术的国家,
Two-dimensional bar code is developed in recent years, a new type of bar code. Due to the limited information content, the one-dimensional barcode has limited its application range. In addition to the advantages of one-dimensional barcode, the two-dimensional barcode also has the advantages of large storage capacity, convenient data acquisition and reading, high reliability, strong confidentiality and anti-counterfeiting It is one of the information technologies vigorously promoted by all countries in the world and has been widely applied in many fields such as licenses, logistics, national defense, e-commerce, security inspection, communications and education. Countries that use 2D barcode technology earlier in the world,