An information acquisition device (10;60) operable in a quality control mode and a measurement mode, the information acquisition device comprising: a data acquisition unit configured to acquire measurement data from an external measuring device; a code reading unit configured to read a code to acquire the information represented by the code; and a data processing unit, wherein the external measuring device is a medical measuring device used to measure patient status and can perform, with a sensor, measurement of a target component in a sample in the measurement mode and accuracy testing of a reference solution used for the measurement of the target component in the quality control mode, and wherein in the quality control mode: as the code, a code representing a first use-by date set for the sensor and a code representing a second use-by date set for the reference solution are further used, the code reading unit is configured to acquire the first use-by date and the second use-by date, and the data processing unit is configured to determine whether or not at least one of the first use-by date and second use-by date acquired by the code reading unit has expired and, if it has expired, the data processing unit is configured to exercise control intended to ensure that no processing of the sample-related measurement data is performed in said information acquisition device, to issue an outbound notification, or do both, and wherein, in the measurement mode: as the code, at least one type of code selected from a code representing an identifier that identifies a medical practitioner and a code representing an identifier that identifies a patient are used and read by the code reading unit, and the data processing unit is configured to associate the information acquired by the code reading unit with the measurement data acquired by the data acquisition unit. a data acquisition unit configured to acquire measurement data from an external measuring device; a code reading unit configured to read a code to acquire the information represented by the code; and a data processing unit, wherein the external measuring device is a medical measuring device used to measure patient status and can perform, with a sensor, measurement of a target component in a sample in the measurement mode and accuracy testing of a reference solution used for the measurement of the target component in the quality control mode, and wherein in the quality control mode: as the code, a code representing a first use-by date set for the sensor and a code representing a second use-by date set for the reference solution are further used, the code reading unit is configured to acquire the first use-by date and the second use-by date, and the data processing unit is configured to determine whether or not at least one of the first use-by date and second use-by date acquired by the code reading unit has expired and, if it has expired, the data processing unit is configured to exercise control intended to ensure that no processing of the sample-related measurement data is performed in said information acquisition device, to issue an outbound notification, or do both, as the code, a code representing a first use-by date set for the sensor and a code representing a second use-by date set for the reference solution are further used, the code reading unit is configured to acquire the first use-by date and the second use-by date, and the data processing unit is configured to determine whether or not at least one of the first use-by date and second use-by date acquired by the code reading unit has expired and, if it has expired, the data processing unit is configured to exercise control intended to ensure that no processing of the sample-related measurement data is performed in said information acquisition device, to issue an outbound notification, or do both, and wherein, in the measurement mode: as the code, at least one type of code selected from a code representing an identifier that identifies a medical practitioner and a code representing an identifier that identifies a patient are used and read by the code reading unit, and the data processing unit is configured to associate the information acquired by the code reading unit with the measurement data acquired by the data acquisition unit.