A staff stood at the entrance and clicked on a counting device each time a customer entered the premises.
Pressure Sensitive Mats
The walk-ins were counted using pressure sensitive sensors placed at the entrance of a shop
Infrared Beam Counters
A simple, infrared beam is placed at the entrance of a store and each time the beam is broken, a count is added.
They used array sensors to detect heat sources
Video & Wi-Fi Counters
Video counters use complex algorithms and image processing to offer highly accurate footfall analytics and customer demographic data. Wi-Fi people counters use WiFi probe request signals from customer smartphones.
Computer Vision & AI-Powered People Counters
The next generation of people counters are expected to leverage advanced computer vision and Artificial Intelligence to offer in-depth customer insights like facial recognition, speech recognition and even the ability to connect previous buying behaviour and browsing data to predict the probability of someone purchasing a specific product.