The app can local the shop and search the shop and goods infomation; Sometiems we will lost in the mall,so we need something to find shop which we want to go; To be honest, Market positioning is difficult;so I store the position of shop in the data base; Searching the position of shop ,we will clear the position of ourself; we can search the shop and goods infomation; we can compare infomation and buy the goods where the most cheap shop;