Apparatus for supplying an encoded data signal, comprising: a detector configured for detecting information on an intended receiver for receiving the encoded data signal to obtain detected information on the intended receiver; a data base having database entries for different intended receivers, wherein a database entry of the database entries for the different intended receivers has one or more properties of one or more coding schemes customized for an intended receiver from the different intended receivers associated with the database entry; a selector configured for selecting, by accessing a database entry of the database, a coding scheme to be used for encoding a data signal based on the detected information on the intended receiver to obtain a selected coding scheme; and an encoding unit configured for encoding the data signal using the selected coding scheme to obtain the encoded data signal, wherein the detector comprises: an interface to a portable data carrier; a reader configured for reading the portable data carrier to retrieve identification information on the intended receiver the portable data carrier is to be attached to, wherein the identification information has been written by the intended receiver to the portable data carrier, when the portable data carrier was inserted in the intended receiver at an earlier time, the identification information constituting the detected information on the intended receiver, and wherein the encoding unit is configured to transmit the encoded data signal to the portable data carrier. a detector configured for detecting information on an intended receiver for receiving the encoded data signal to obtain detected information on the intended receiver; a data base having database entries for different intended receivers, wherein a database entry of the database entries for the different intended receivers has one or more properties of one or more coding schemes customized for an intended receiver from the different intended receivers associated with the database entry; a selector configured for selecting, by accessing a database entry of the database, a coding scheme to be used for encoding a data signal based on the detected information on the intended receiver to obtain a selected coding scheme; and an encoding unit configured for encoding the data signal using the selected coding scheme to obtain the encoded data signal, wherein the detector comprises: an interface to a portable data carrier; a reader configured for reading the portable data carrier to retrieve identification information on the intended receiver the portable data carrier is to be attached to, wherein the identification information has been written by the intended receiver to the portable data carrier, when the portable data carrier was inserted in the intended receiver at an earlier time, the identification information constituting the detected information on the intended receiver, and wherein the encoding unit is configured to transmit the encoded data signal to the portable data carrier. an interface to a portable data carrier; a reader configured for reading the portable data carrier to retrieve identification information on the intended receiver the portable data carrier is to be attached to, wherein the identification information has been written by the intended receiver to the portable data carrier, when the portable data carrier was inserted in the intended receiver at an earlier time, the identification information constituting the detected information on the intended receiver, and wherein the encoding unit is configured to transmit the encoded data signal to the portable data carrier.