Key Considerations:

• Location – WiFi, GPS, Beacons, and user motion all play a key part in determining accuracy.
• POIs – The need to match Point of Interest to location requires a highly accurate and current list of places.
• Volume – Panel sizes are required to be large enough to accurately reflect visitors.
• Panel Biases – Panel biases are modeled and accounted for in extrapolations.
• Panel Variations – Changes in technology and application sources are normalized over time.