In a method for providing data for a data processing device (100) by a web server (72) of a data carrier (10), the web server (72) of the data carrier (10) receives (1010) a data request message from the data processing device (100) connected with the data carrier (10), the data request message relating to a provision of data for the data processing device (100). Then the web server (72) responds (1030; 1260) to the data request message by sending a data provision message which comprises the requested data. For this purpose, the web server (72) either reads out the data from a non-volatile memory (62) of the data carrier or obtains these, if the data are not stored in the non-volatile memory (62), from a data provision device (200) connected with the data carrier (10). If the requested data are obtained from the data provision device (200), the data carrier (10) determines whether the obtained data are stored in the non-volatile memory (62) of the data carrier (10) for the response to future data request messages.