How do I measure in-store Visits?

GroundTruth maintains a database of 5M blueprints. Visits are recorded when a user is exposed to your mobile ad and later shows up within your Blueprinted store location. This “raw” visitation metric is the actual observed measurement. Since the user has to both see your ad and be on a mobile device when they visit your “drive-to location”, visits reported by GroundTruth are often the lower than the actual visitors from ad spend.