Abstract
A survey was conducted to classify IT device users in order to identify truly useful IT devices: In the 1st stage, comments of examinees on a several kinds of IT device were collected, describing reasons why use or not use the IT devices, to obtain a numerical ratio of the interface-referring comments to the personal preference comments. In the 2nd stage, examinees were divided into 3 groups, i.e. a group of high ratio, low ratio and intermediate ratio. And in the final stage, various attributes such as age, gender, cognitive character etc. of each group were compared to identify the attributes of significant difference.
