With the continuous development of the socio-economic information network technology,people increasingly rely on mobile Internet,and have much higher requirements for the mobile experience; on the other hand,another part of consumption - the merchant is also gradually looking for more innovative and efficient means to demonstrate their products and services to increase revenue. In such circumstances,the sign business model appears on the scene,people can go to merchant stores to check-in and get more promotions with handheld devices. In order to solve the consumer to sign the accurate location positioning,two-dimensional code recognition technology is used to provide a real and effective sign experience.%随着社会经济与信息网络技术的不断发展,人们对移动互联网越来越依赖,对移动体验的要求也越来越高；另一方面消费的另一环节-商户也渐渐地在寻找更加新颖快捷的技术手段来表现他们的产品及服务以增加收入.在这样的环境下,签到商业模式应运而生,人们可以通过手持设备向某地的商户门店进行签到进行互动.为了解决消费者签到位置定位不准确的问题,采取了二维码识别技术来为商家和消费者提供真实有效的签到体验.
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