Mobile terminal device, method for preventing operational error, and program

A method for preventing operational errors, comprising:

• a detecting step of detecting a touch operation, by means of a touch panel for detecting the touch operation at least on a display area of a display means, on an outer side region which is an outer peripheral portion of the touch panel;
• a judging step of judging whether or not a contact area of the touch operation on the outer side region is equal to or larger than a predetermined threshold value;
• and
• a disabling step of disabling the touch operation on the outer side region when judged that the contact area of the touch operation on the outer side region is equal to or larger than the predetermined threshold value.

A nontransitory computer-readable medium on which is stored a program to be executed by a computer of a mobile terminal device including a display means and a touch panel for detecting a touch operation at least on a display area of the display means, the program comprising instructions to perform steps of:

• a touch operation detecting function of detecting the touch operation on an outer side region which is on an outer peripheral portion of the touch panel;
• a judgment function of judging whether or not a contact area of the touch operation on the outer side region is equal to or larger than a predetermined threshold value;
• and
• a touch operation control function of disabling the touch operation on the outer side region when judged that the contact area of the touch operation on the outer side region is equal to or larger than the predetermined threshold value.