| 摘要 |
PROBLEM TO BE SOLVED: To efficiently prevent an incorrect operation when an input key is operated without depending on a visual sense.SOLUTION: A sheet 200 is detachably attached to a touch panel 110 of a portable terminal 100, and comprises: a sheet body 202 on which an opening is formed, the opening exposes input keys 140, 150 to be displayed on an operation screen 112 of the touch panel 110; and notch surfaces 232 which are supported to the sheet body on a position facing the input keys exposed from the opening, so as to separate from the input keys. The notch surfaces comprise a notch hole 234 into which a finger is inserted, and the notch hole has a shape corresponding to each input key. According to the configuration, when operating the input keys without depending on a visual sense, without touching the input keys, a user can search and confirm a desired input key, by touching by a finger to the notch hole of the sheet. When the desired input key is found, the finger is inserted into the notch hole of the sheet, the input key can be tapped directly.SELECTED DRAWING: Figure 1 |
