 Modern mobile operating systems, such as Apple's iOS9 and Android 6.0 Marshmallow, use MAC rotation schemes which makes WiFi counting more challenging without using sophisticated algorithms.The 4th generation of people counters includes an option for users to review the authenticity and integrity of the data provided by their people counter.The user will be able to verify the accuracy of the counter and make business decisions accordingly, factoring in all the disparity of data.