Traffic count, or traffic flow measurement, is the process of obtaining data on the number of people passing by a certain location, e.g., a cafe or a point of sales, for a given period. The more traffic flow a location has, the more people will see your signboard and visit your store.
Analyzing pedestrian traffic will help in business diagnostics. Knowing the daily traffic at the location of your point of sales, you can monitor the conversion of any of your marketing activities and the quality of service.
The most accurate way to measure traffic is to take a video of the entrance area and count how many people have passed by in a given period (e.g., an hour or a day).