In recent years, the domestic and foreign food security crisis occurs frequently, this affects the health of citizen seriously, and meanwhile it creates very adverse effects to the social stability. The thesis proposes a food information traceability system based on the two-dimensional code of mobile phone, the system has the large information and high reliability characteristic, it can provide a powerful technical support to food quality supervision, trace and query, and also has the advantage of low cost, strong expansibility, good environmental efficiency and etc.
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