The research to develop technology supporting the acquisition of communication using IT technology for the developmentally disabled individual whose communication with language is difficult. Part .IOTA.I. How should the private information of multiple disabled individuals, be handled ? - The legal interpretation on the handling of the private information to the disabled individuals. - (Report 4) Substantiality and private information protection of the support to the severity disabled individuals. - Act and treaty and standard for the privacy protection -.