Table 14.

Wearable eye-tracking studies in unconstrained situations, e.g. in supermarkets, cars, and flight decks, or during locomotion and sports

1	The illuminance may be important. Particularly changes in illuminance throughout a measurement.
2	Are there potential vibrations that may affect data quality?
3	Automatic analysis methods for transforming gaze location from a head-centered to a world-centered description are often problematic. If used, describe how these methods were validated by the authors for their use case.
4	If manual analysis is done, provide information on e.g. the annotation protocol, instructions to the coders, and report inter-rater reliability.