Number of counter required per entrance is depend on the entrance's width and the ceiling height of where the counter is going to be mounted.
Calculate the min. clearance distance required between counter and the drop down obstacle (e.g. decorations, exit signage, bulk head, wall. etc.) to prevent the counter live view being blocked and not able to count accurately.
Counter live view is blocked partially by the drop down obstacle. This may result to the counter not able to count accurately due to the limited tracking zone.
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