A method for accessing information in a private database is disclosed. The device accepts, for example, speech or key input and outputs both graphical display data and vocal data. A panel key signal processing unit, which is a high-priority signal processing unit, processes the signal received by the panel keys. The alternate dispute resolution procedure is then conducted through the exchange of information through chat in the main chat room and the presentation of evidence using the virtual presenter. 5 mm and the thickness satisfies the following formula: t1\u22120.