Using people counters to measure audience
Seattle Digital Signage is the leading provider of affordable digital billboard advertising solutions, digital signage kiosk, iPosters, and electronic tickers in Seattle, Washington. They use the Traf-Sys Wireless Infrared Beams to measure the audience for their advertisements. This information gives them the advantage of knowing how many people their advertisements are reaching which allows them to target larger audiences.
You can learn more about Seattle Digital Signage at their website, www.seattledigitalsignage.com