| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem that change of quality of a commodity cannot be detected when it is left in an unmanned condition and under a situation in which there is no storage environmental controller, although a deteriorated commodity can be found and classified if a vessel storing the commodity is under manned management environment in the known technology. <P>SOLUTION: A recording medium attached to the commodity to record environmental data for storing the commodity is provided with at least a reception part receiving a question about storage condition of the commodity from an external device by radio and a transmission part transmitting storage condition data of the commodity stored in a storage part of the recording medium to the external device by radio. When the recording medium can receive the storage environmental data from the external device by radio, the data is received by the reception part and is recorded in a recording part of the recording medium. When deviating from the storage environment attached to the commodity as a part of the recording medium, it is displayed by a display means changing irreversibly. <P>COPYRIGHT: (C)2004,JPO |
