Abstract
This research proposes the domination of the addition of digital information to the thing. To verify the domination of making digital information added, the New Year greeting postcard was made a model. Software that easily printed the address of the New Year's card was developed. This has gone to read digital information to make it add to the postcard with the computer. As a result, the person who receives postcard can use digital information that the addressor of the postcard input. Adding a new function to the postcard became possible. In addition, it will be necessary to increase the function in the future. It is necessary to examine which information can be used. There is addressor's information besides the name, the ZIP code, and the address. For instance, relation between addressor and the person who receives etc. convenient information should clarify something. When information is arranged, and it is made to add to the postcard as digital information, the construction of the data base through the postcard becomes possible.
