| 摘要 |
PURPOSE:To prevent dealings wherein a person other than a dealing user himself illegally knows a password code by storing a new password code that the dealing user inputs as a password code for next dealings in a storage means. CONSTITUTION:User dealing information which is necessary for dealings is previously stored in a storage means 3. This user-dealing information includes the password code that the dealing user optionally sets. The dealing user makes an input means 1 read a medium storing recording information specifying the dealing user. A retrieval means 2 retrieves the user-dealing information in the storage means 3 according to the read recording information. The dealing user inputs the password code which is inputted in last dealings from an input means 1. A comparing means 4 detects the coincidence between the password codes obtained from the input means 1 and retrieval means 2. When they match each other, the dealing user is allowed to have dealings. When not, the medium, stored with the stored means specifying the dealing user, which is present at the input means 1 is returned and the processing is ended. |
