An input check device comprising: a coordinate detection part configured to detect coordinates of a touch operation a user performs on an operating surface when operating an operating part through the operating surface; a pressing force detection part configured to detect a pressing force of the touch operation; and an identifying part configured to determine whether the operating part is ON or OFF based on the pressing force detected in the pressing force detection part, wherein: when the pressing force surpasses a first threshold while the operating part is OFF, the identifying part is configured to determine that the operating part is turned ON; when the pressing force surpasses the first threshold and becomes equal to or less than a second threshold, the second threshold being higher than the first threshold and being a predetermined proportion of a peak value of the pressing force, the identifying part is configured to determine that the operating part is switched from ON to OFF, characterised in that after determining that the operating part is switched from ON mode to OFF mode, the identifying part is configured to detect a minimum value of the pressing force within a predetermined period of time after the pressing force equals or falls below the second threshold; and the identifying part is configured to determine that the operating part is switched from OFF to ON when, following the detection of the minimum value, the pressing force surpasses a predetermined threshold that is set based on the minimum value and that is greater than the minimum value, wherein the predetermined threshold is a value resulting from adding a predetermined proportion of the minimum value to the minimum value or a value resulting from adding a third threshold to the minimum value. a coordinate detection part configured to detect coordinates of a touch operation a user performs on an operating surface when operating an operating part through the operating surface; a pressing force detection part configured to detect a pressing force of the touch operation; and an identifying part configured to determine whether the operating part is ON or OFF based on the pressing force detected in the pressing force detection part, wherein: when the pressing force surpasses a first threshold while the operating part is OFF, the identifying part is configured to determine that the operating part is turned ON; when the pressing force surpasses the first threshold and becomes equal to or less than a second threshold, the second threshold being higher than the first threshold and being a predetermined proportion of a peak value of the pressing force, the identifying part is configured to determine that the operating part is switched from ON to OFF, characterised in that after determining that the operating part is switched from ON mode to OFF mode, the identifying part is configured to detect a minimum value of the pressing force within a predetermined period of time after the pressing force equals or falls below the second threshold; and the identifying part is configured to determine that the operating part is switched from OFF to ON when, following the detection of the minimum value, the pressing force surpasses a predetermined threshold that is set based on the minimum value and that is greater than the minimum value, wherein the predetermined threshold is a value resulting from adding a predetermined proportion of the minimum value to the minimum value or a value resulting from adding a third threshold to the minimum value. when the pressing force surpasses a first threshold while the operating part is OFF, the identifying part is configured to determine that the operating part is turned ON; when the pressing force surpasses the first threshold and becomes equal to or less than a second threshold, the second threshold being higher than the first threshold and being a predetermined proportion of a peak value of the pressing force, the identifying part is configured to determine that the operating part is switched from ON to OFF, characterised in that after determining that the operating part is switched from ON mode to OFF mode, the identifying part is configured to detect a minimum value of the pressing force within a predetermined period of time after the pressing force equals or falls below the second threshold; and the identifying part is configured to determine that the operating part is switched from OFF to ON when, following the detection of the minimum value, the pressing force surpasses a predetermined threshold that is set based on the minimum value and that is greater than the minimum value, wherein the predetermined threshold is a value resulting from adding a predetermined proportion of the minimum value to the minimum value or a value resulting from adding a third threshold to the minimum value.