Abstract: A device/system and method of use thereof, that is capable of observing customer interactions with a display without the need to be connected to an outlet power source and can be self-contained. The device is capable on being run by a battery pack for an extended period of time and can be readily attached and un-attached from the display with simple effort. The device can have a camera to record visual data of the customers (for later analysis), a presence sensor (to detect customer movement), a WIFI module (to receive information from customers' mobile devices), and a CPU and memory card to store the information gathered. The device can be in a compact package design that allows it to be seamlessly attached and unattached as a unit, and can be used as the package for sending to an outside site for analysis the monitored behavior of the customers.