An information input device includes a detection portion and a processor. The detection portion is configured to detect one or more detection positions being one or more positions of a writing portion that is one of in contact with and close to a detection area. The processor is configured to acquire, based on the one or more detection positions, line data that corresponds to a single line drawing written using the writing portion, determine whether a start position is in a first area being part of the detection area, determine whether at least one of a first condition and a second condition is satisfied, and determine that an instruction corresponding to a second area is input, in response to determining that the start position is in the first area and determining that at least one of the first condition and the second condition is satisfied.
Information Input Device, Control Method, and Non-Transitory Computer-Readable Medium Storing Computer-Readable Instructions