quality in one exemplary embodiment the antenna 22 is a near field communication nfc antenna for the mobile terminal to perform wireless communications with another device such as a contactless smart card within a certain range nfc is a short range low frequency wireless communication technology allowing a contactless point to point data transmission between electronic devices nfc features high bandwidth low energy consumption and the like due to its unique signal attenuation model in addition nfc is compatible with contactless smart cards and is becoming a formal standard furthermore nfc can allow various devices to securely rapidly and automatically communicate with each other by applying a near field connection protocol compared to other wireless communication technologies nfc can be used in private communications within a short range nfc plays an important role in the field of access control management bus card identification mobile payment and the like in one exemplary embodiment the antenna 20 is arranged in the pendant body 11 in a manner of homocentric squares in the above illustrated embodiments the antenna 20 is built in the pendant body 11 of the pendant 10 such that when the pendant 10 is connected to the second connecting component of the terminal through the first connecting component 13 the connecting contacts in the first connecting component 13 are in contact with the antenna contacts in the second connecting component which implements the connection between the antenna 20 built in the pendant body 11 and the mobile terminal thus due to the built in arrangement in the pendant 10 that is separated from the mobile terminal the antenna 20 is disposed outside the mobile terminal which helps saving space in the mobile terminal fig4 illustrates a block diagram of a device 40 according to an exemplary embodiment referring to fig4.