Abstract:

In order to meet the demand of consumers searching the information about food and medicine, a QR (Quick Response) code backtracking system of fo
od and medicine based on Android is proposed. To realize the Chinese characters encoding, a kind of two-imensional technology called QR code is used. The system applies Android 4.0.3 embedded system as its hardware development platform to implement QR code recognition interface, display interface, etc. The functions of information inquiring and inputting based on Android are achieved by realizing the data transmission between wireless network and MySQL (My Structured Query Language) database. Test results show that the system has a good anti-interference in the process of QR code scanning. When we scan a QR code with maximum rotation angle 45°, we still can get the useful information. And the system can be widely used relying on the strong mobility of Android.

Key words: Android operating system, quick response (QR) code, backtracking system