Embodiments are disclosed for using an apparatus to perform pupil identification. An example method includes measuring, by a light sensor of the apparatus, an ambient infrared light level. The example method further includes determining whether the measured ambient infrared light level exceeds a threshold level. The example method further includes performing pupil identification on a user based on the determination of whether the measured ambient infrared light level exceeds the threshold level. In this regard, the example method involves performing bright pupil identification in an instance in which the measured ambient infrared light level exceeds the threshold level, and performing dark pupil identification if not. Corresponding apparatuses and non-transitory computer readable storage media are also provided.