An electronic information processing system (1) is provided with: a first display control unit (6a) for displaying, as an input character, a character received through a character input operation by a user; a presentation necessity determination unit (6b) for determining, using a detection result from a brain activity detection unit (8) after the input character is displayed, whether it is necessary to present replacement candidate characters corresponding to the input character or not; a second display control unit (6c) for displaying the replacement candidate characters when it is determined that presenting the replacement candidate characters is necessary; a replacement necessity determination unit (6d) for selecting a character for replacement from the replacement candidate characters when it is determined, using a detection result from an eye direction detection unit (12) and a detection result from the brain activity detection unit after the replacement candidate characters are displayed, that replacing the input character with a replacement candidate character is necessary; and a character finalization unit (6f) for finalizing the character for replacement as a finalized character.
ELECTRONIC INFORMATION PROCESSING SYSTEM AND COMPUTER PROGRAM