For attribute analysis, only visitors meeting the following conditions are measured.
Not wearing a hat
Not wearing glasses or sunglasses
Not looking down (e.g. walking while looking at a smartphone)
Not facing sideways
Not standing behind an obstruction such as a product or display
As for mask-wearers, a topic we get a lot of questions about — compared to not wearing a mask, they're more likely to be excluded from measurement. Also, since a mask covers most of the face, they tend to be measured as younger than their actual age.