RFID gates
RFID gates with fixed readers are used in warehouses, logistic centers, loading docks, retail stores, for EAS activities and in personnel check-in/check-out systems. This article discusses RFID gates and their most common applications.
More information: http://rfidarena.com/2012/10/23/rfid-gates-%E2%80%93-where-are-they-and-why.aspx