The present disclosure provides an information processing system including a recognition database generated from information on an article, wherein the article is associated with a home electric device, and the information processing system performs a matching process against the recognition database on the basis of article-use detection information provided by the home electric device with which the article is associated, and identifies an article used in the home electric device. With the configuration described above, on the basis of a recognition database generated from information on a purchased article and on the basis of article-use detection information of a home electric device associated with a purchaser of the purchased article, an article used in the home electric device can be identified.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. An information processing system comprising: a recognition database generated from information on a purchased article, wherein the purchased article is associated with a home electric device; and circuitry which, in operation: performs a matching process against the recognition database on the basis of article-use detection information provided by the home electric device with which the article is associated; and identifies an article used in the home electric device. 2. The information processing system according to claim 1, wherein the recognition database is generated on the basis of an image of the article or on the basis of an image of an item processed or packaged similarly to the article. 3. The information processing system according to claim 1, wherein the circuitry identifies the article used in the home electric device by using image recognition or speech recognition. 4. The information processing system according to claim 1, wherein the circuitry further selects a method for the matching process in accordance with the information on the article. 5. The information processing system according to claim 1, wherein the purchased article is associated with the home electric device by using a personal ID such as member information of a purchaser. 6. The information processing system according to claim 1, wherein association of the purchased article with the home electric device is performed by reading, with the home electric device, a unique ID issued from a sales management apparatus at the time of purchase. 7. The information processing system according to claim 1, wherein the recognition database includes, for each article, attribute information indicating one or more candidate(s) of home electric device(s) in which the article might be used, and wherein the circuitry identifies, by using the attribute information and use information indicating in which home electric device the article has been used, the article used in the home electric device. 8. The information processing system according to claim 1, wherein the circuitry further performs a recognition or recognition correction process on the basis of article-use detection information provided by a plurality of home electric devices. 9. An information processing system comprising: a prediction database generated from information on a purchased article, wherein the purchased article is associated with a home electric device; and circuitry which, in operation: predicts, on the basis of information on use of an article in the home electric device with which the purchased article is associated, the article used in the home electric device by using the prediction database. 10. The information processing system according to claim 9, wherein the circuitry further provides, to the home electric device or to another relevant home electric device, a home appliance control command related to the article used in the home electric device. 11. A crime-deterrent system comprising: a recognition database having registered therein information on one or more candidate visitors; and circuitry which, in operation: gives an instruction in advance to a home electric device in a home to be visited by a visitor to utilize the recognition database, and determines whether the visitor matches a person in the recognition database, on the basis of person visit detection information provided by the home electric device.