The CDx 5 is an "online" and update component in the doorLoxx System. It can be connected to the network via the IDC 2 controller. Depending on the identification medium used, it is possible to transfer data to both passive transponders as well as active key fobs at the CDx 5 reader. Data stored in this manner is designated "Cardnet" or "Tagnet". The CDx 5 updates the daily time stamp, in other words the validity of the access authorization on the identification medium.