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The amusement park is a paradise for children, but children are easy to get lost since there are too many people in it. To address the problem successfully, we can combine direction board with search notice board. Direction board displays directions at ordinary times, when some kid is lost, parents can send kid's head photo by connecting phone with direction board, and then the direction board will launch searching mode to display the lost kid's head photo and his related information, which can take advantage of people's power to look for the kid and create a good environment in entertainment park at the same time.
Zhejiang A&F University