Table 4.

Data collected by category and wave.

Category	Wave 1	Added to wave 2
Metadata	•Device identification number •Time data recorded (on device) •Latitude/longitude •GPS accuracy •Record # •Time data uploaded (to cloud database)
General	•Data collector name •City •PVZ •Sampling area center type (shopping mall, intersection, or transit station) •POS type •Street address	•POS ID# •POS status (open, closed, combined with other POS, or changed POS type) •Does POS still sell tobacco? (yes/no)
TAPS	Presence and offending brand of: •Light boxes •Enlarged packaging •Signage •Imitation tobacco products •Brand stretching •Discounts •Gifts (free or with purchase) •Free distribution of tobacco products •Other advertisement or promotion (open response)
Product display	Display of tobacco products visible from: •Window on street or underground crossing •Cashier zone •On a power wall •Other display area (open response)	•Compliance with product listing requirements
Image/photograph	•Front/entrance of the POS •Inside POS near display area (optional) •Close-up of product display/advertisement/promotion (optional) •Other POS product display (optional)
Retail environment	Presence or sale of: •A door for customers to enter/exit •Candies/sweets/snacks in the cashier zone •Alcohol •Gasoline •Electronic cigarettes