Circuit device and a communication apparatus

A communication apparatus comprising a communication device and a circuit device being configured to perform non-contact communication with an external apparatus, wherein the circuit device comprises:

• an interface being configured to transfer data with the communication device;
• and
• a control device being configured to conduct an authentication with another communication apparatus if an authentication request is received through the communication device and the interface.

A method to perform non-contact communication with an external apparatus and transfer data with a communication device of a first communication apparatus, the method comprising:

• communicating, via an interface, with the communication device of the first communication apparatus;
• and
• conducting, via a control device, an authentication with a second communication apparatus if an authentication request is received through the communication device and the interface.

A method to perform non-contact communication with an external apparatus, the method comprising:

• transferring data, via an interface of a communication apparatus, with a communication device;
• and
• conducting, via a control device of the communication apparatus, an authentication with another communication apparatus if an authentication request is received through the communication device and the interface.