Supermarket shopping advertisement playing method based on RFID and interest records

The invention discloses a supermarket shopping advertisement playing method based on RFID (Radio Frequency Identification) and interest records. According to the method, an electronic tag corresponding to each kind of commodities is arranged in the position of each kind of commodities in a supermarket; a plurality of RFID card reading devices are uniformly arranged in the supermarket; each RFID card reading device is controlled to read information of the electronic tags of various kinds of commodities in the preset reading range; an index list is built for the read information; after a customer inputs information of a commodity to be inquired on handheld equipment, each RFID card reading device returns a result after the inquiry; the inquiry is stored in a database as an interest record; when the stop duration time of the customer in the shopping region coordinates of the supermarket exceeds the preset time threshold value, a commodity category concerned by the customer is used as an interest record to be stored in the database; and the handheld equipment plays the advertisement of the commodity category concerned by the customer in the shopping region, and plays the advertisement of the category of a commodity most interested by the customer in a non-shopping region. The supermarket shopping advertisement playing method has the advantages that the design is simple; and the commodities can be recommended to the customer in a targeted way.