Abstract: A non-transitory computer-readable recording medium has stored therein a program that causes a computer to execute a process, the process including: determining, when a distance from a sensor to a target person is equal to or greater than a threshold value, whether the target person satisfies a first criterion included in first reference information for each of the plurality of persons, the distance being detected by the sensor; capturing, when the distance is less than the threshold value, a first image of the target person by a camera provided in a vicinity of the sensor; and performing a face authentication process for the target person on the first image preferentially using second reference information corresponding to the first reference information including a second criterion determined to be satisfied by the target person.