Bumbee Labs measures visitor flows by capturing anonymous Wi-Fi signals in smart mobile phones and can make measurements in both outdoor and indoor environments. The visitor flows are measured completely anonymously and the measurement method is unique in its kind to have an approval from the Swedish Datainspektionen with GDPR taken into account. By using this method, Bumbee Labs can produce very reliable statistics on how many people visit the measurement area during different time intervals, how long visitors stay in the measurement area and what the most common walking paths are.