Abstract: The invention relates to an apparatus (100) which comprises a receiving member (110) configured to receive a chip card (200). The chip card (200) is configured for contactless communication with a first hardware interface (311). The apparatus (100) further comprises communication means (120) configured to enable contactless communication with a second hardware interface (321), wherein the first hardware interface (311) and the second hardware interface (321) are hardware interfaces of different types. The communication means (120) are configured to enable a communication of the communication means (120) with the chip card (200) when the chip card (200) is received in the receiving member (110).

Abstract: Method, comprising authenticating one or more first clients by a server, authenticating one or more second clients by the server and providing at least one application data unit switching by the server such that, when a data packet having a control application data unit is received from one of the first clients at the server, the server sends a data packet having the control application data unit that the received data packet contains to at least one of the second clients, and/or that, when a data packet having a response application data unit is received from one of the second clients at the server, the server sends a data packet having the response application data unit that the received data packet contains to at least one of the first clients.

Abstract: The invention relates to an apparatus (100) which comprises a receiving member (110) configured to receive a chip card (200). The chip card (200) is configured for contactless communication with a first hardware interface (311). The apparatus (100) further comprises communication means (120) configured to enable contactless communication with a second hardware interface (321), wherein the first hardware interface (311) and the second hardware interface (321) are hardware interfaces of different types. The communication means (120) are configured to enable a communication of the communication means (120) with the chip card (200) when the chip card (200) is received in the receiving member (110).