A person counter is an electronic device that is used to measure the number of people traversing a certain passage or entrance. Examples include simple manual clickers, smart$-$flooring technologies, infrared beams, thermal imaging systems, Wi$-$Fi trackers and video counters using advanced machine learning algorithms.

Now design such a counter for queue management by counting the number of persons entering into a bank in a business day.

Which technique do you prefer from the example mentioned above?

II$.$ Draw necessary block diagram, pseudo$-$code and iterations on it$.$