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A communication system includes a portable machine having an identification code registered in a controlled object, the portable machine being capable of conducting wireless communications with the controlled object, and a portable terminal being capable of conducting noncontact wireless communicati

A communication system includes a portable machine having an identification code registered in a controlled object, the portable machine being capable of conducting wireless communications with the controlled object, and a portable terminal being capable of conducting noncontact wireless communications with the portable machine, wherein after noncontact wireless communications start between the portable machine and the portable terminal, the noncontact wireless communications are inhibited when a predetermined condition is satisfied, and then do not resume unless a specified instruction is given.

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1. A communication system comprising: a portable machine having an identification code registered in a controlled object, wherein the portable machine conducts wireless communications with the controlled object: anda portable terminal that conducts noncontact wireless communications with the portabl

1. A communication system comprising: a portable machine having an identification code registered in a controlled object, wherein the portable machine conducts wireless communications with the controlled object: anda portable terminal that conducts noncontact wireless communications with the portable machine,wherein the portable terminal includes: a first transmission unit transmitting a first signal to the portable machine; anda first reception unit receiving a second signal from the portable machine,the portable machine includes: a second reception unit receiving the first signal which the first transmission unit has transmitted;a control unit controlling generation of the second signal, in relation to the first signal which the second reception unit has received; anda second transmission unit transmitting the second signal generated by the control unit to the first reception unit of the portable terminal,wherein after noncontact wireless communications start between the portable machine and the portable terminal, the noncontact wireless communications are inhibited by inhibiting the first transmission unit from transmitting the first signal, in a case where the noncontact wireless communications are successfully established a prescribed number of times or more within a predetermined period, in a case where the noncontact wireless communications stay established over a predetermined period or longer, or in a case where a user does not operate the portable terminal over a predetermined period or longer, and then do not resume unless any user's operation to the portable terminal is given, or unless a phone call for the portable terminal is given. 2. The communication system according to claim 1, wherein, in a case where the noncontact wireless communications are successfully established the prescribed number of times or more within the predetermined period, or in a case where the noncontact wireless communications stay established over the predetermined period or longer, the control unit of the portable machine transmits the second signal and a transmission inhibiting request signal for inhibiting transmission of the first signal, andwherein, when receiving the transmission inhibiting request signal, the portable terminal inhibits the transmission of the first signal. 3. The communication system according to claim 1, wherein when noncontact wireless communications are established with the portable machine, the portable terminal activates a predetermined application and exhibits a display for the application on a screen. 4. The communication system according to claim 3, wherein the portable terminal turns off the display on the screen, along with the inhibition of the noncontact wireless communications. 5. The communication system according to claim 3, wherein after the noncontact wireless communications are inhibited, when receiving a user's operation for displaying the screen, the portable terminal displays, on the screen, a notification that the noncontact wireless communications have been inhibited and an operation method of giving the specified instruction. 6. The communication system according to claim 1, wherein, when receiving the any user's operation, the portable terminal displays, on the screen, a notification that the noncontact wireless communications have been inhibited, and restarts noncontact wireless communications in response to an operation other than the any user's operation. 7. A communication system comprising: a portable machine having an identification code registered in a controlled object, wherein the portable machine conducts wireless communications with the controlled object: anda portable terminal that conducts noncontact wireless communications with the portable machine,wherein after noncontact wireless communications start between the portable machine and the portable terminal, the noncontact wireless communications are inhibited when a predetermined condition is satisfied, and then do not resume unless a specified instruction is given,wherein when noncontact wireless communications are established with the portable machine, the portable terminal activates a predetermined application and exhibits a display for the application on a screen, andwherein the portable terminal turns off the display on the screen, along with the inhibition of the noncontact wireless communications. 8. A communication system comprising: a portable machine having an identification code registered in a controlled object, wherein the portable machine conducts wireless communications with the controlled object: anda portable terminal that conducts noncontact wireless communications with the portable machine,wherein after noncontact wireless communications start between the portable machine and the portable terminal, the noncontact wireless communications are inhibited when a predetermined condition is satisfied, and then do not resume unless a specified instruction is given,wherein when noncontact wireless communications are established with the portable machine, the portable terminal activates a predetermined application and exhibits a display for the application on a screen, andwherein after the noncontact wireless communications are inhibited, when receiving a user's operation for displaying the screen, the portable terminal displays, on the screen, a notification that the noncontact wireless communications have been inhibited and an operation method of giving the specified instruction.