A portable electronic apparatus that is coupled to a portable terminal device comprising a contactless communication unit, the apparatus comprising: a first interface configured to perform communication with the portable terminal device; a second interface configured to perform contactless communication by using the contactless communication unit; a storage unit which stores a plurality of application programs (63a, 63b, 63c) that execute processing during the contactless communication using the contactless communication unit through the second interface; a setting unit (51, S17) configured to set an application program capable of responding to an access request during the contactless communication in the plurality of application programs stored in the storage unit; and a processing unit (51, S22) by which the application program is enabled to respond to the access request during the contactless communication whereby the setting unit alone responds upon receiving the access request during the contactless communication through the second interface, characterized by further comprising: a holding unit (54, 53) which holds an application list including setting information indicating whether each application program stored in the storage unit is capable of responding to the access request through the second interface, wherein the setting unit (51, S17) enables the setting information for a desired application program in the application list to respond to the access request through the second interface, wherein the application list, as an initial value of the setting information associated with each application program, includes setting information indicating that each application program is disabled to respond to the access request through the second interface, and wherein the setting unit (51, S17) is configured to set the setting information of an application program such that the application program is enabled to respond to the access request through the second interface, when information indicating the application program being permitted to be disclosed in response to the access request during the contactless communication is received from the portable terminal device via the first interface. a first interface configured to perform communication with the portable terminal device; a second interface configured to perform contactless communication by using the contactless communication unit; a storage unit which stores a plurality of application programs (63a, 63b, 63c) that execute processing during the contactless communication using the contactless communication unit through the second interface; a setting unit (51, S17) configured to set an application program capable of responding to an access request during the contactless communication in the plurality of application programs stored in the storage unit; and a processing unit (51, S22) by which the application program is enabled to respond to the access request during the contactless communication whereby the setting unit alone responds upon receiving the access request during the contactless communication through the second interface, characterized by further comprising: a holding unit (54, 53) which holds an application list including setting information indicating whether each application program stored in the storage unit is capable of responding to the access request through the second interface, wherein the setting unit (51, S17) enables the setting information for a desired application program in the application list to respond to the access request through the second interface, wherein the application list, as an initial value of the setting information associated with each application program, includes setting information indicating that each application program is disabled to respond to the access request through the second interface, and wherein the setting unit (51, S17) is configured to set the setting information of an application program such that the application program is enabled to respond to the access request through the second interface, when information indicating the application program being permitted to be disclosed in response to the access request during the contactless communication is received from the portable terminal device via the first interface. a holding unit (54, 53) which holds an application list including setting information indicating whether each application program stored in the storage unit is capable of responding to the access request through the second interface, wherein the setting unit (51, S17) enables the setting information for a desired application program in the application list to respond to the access request through the second interface, wherein the application list, as an initial value of the setting information associated with each application program, includes setting information indicating that each application program is disabled to respond to the access request through the second interface, and wherein the setting unit (51, S17) is configured to set the setting information of an application program such that the application program is enabled to respond to the access request through the second interface, when information indicating the application program being permitted to be disclosed in response to the access request during the contactless communication is received from the portable terminal device via the first interface.