Information input device

An information input device comprising:

• a display configured to display a plurality of objects;
• a touch sensor having a touch surface and configured to output a signal indicating a touch position at which the touch surface is touched by a detection target;
• and
• a controller configured to receive the signal indicating the touch position, wherein
• when receiving the signal indicating the touch position, the controller determines whether the touch position is a position corresponding to any of the objects,
• when determining that the touch position is a position corresponding to any of the objects, the controller accepts the touch as a touch operation,
• when accepting the touch operation, the controller sets a portion of the touch surface as an erroneous input restriction region,
• the erroneous input restriction region is a region in which erroneous input by the detection target is restricted,
• the controller sets the erroneous input restriction region based on the touch position,
• the controller determines whether or not the touch operation is cancelled,
• when determining that the touch operation is cancelled, the controller changes the erroneous input restriction region based on the touch position,
• the controller changes the erroneous input restriction region based on a distance from the touch position, and
• the controller changes the erroneous input restriction region in a manner that the erroneous input restriction is cancelled radially from the touch position of the cancelled touch operation, such that a longer cancellation time from cancellation of the touch operation to cancellation of a corresponding portion of the erroneous input restriction region is set for the corresponding portion of the erroneous input restriction region farther from the touch position than a portion of the erroneous input restriction region closer to the touch position.