QTA Check-In Node is a part of QTA Tracer System, which is a blood bank monitoring system used by hospitals and blood banks. Available in Europe. QTA Check-In nodes placed in various rooms/departments/hospitals help keep track of where the blood bag has been. When a blood bag with a QTA Tracer passes a QTA Check-In node it is registered in the node and information instantly uploaded to the QTA Web Portal where it can be accessed. The information includes the GPS based location of the QTA Check-In node.It is constantly up-and-running, eliminating the need for scanning single QTA Tracers to get information uploaded to the QTA Web Portal. The process is carried out automatically every time tracers pass the QTA Check-In node.A QTA Tracer HW is required to make any use of this application. QTA Check-In node is dependent on Bluetooth 4.