A system comprising: a set of repeater devices (R1, R2, R3, R4), each repeater device comprising a first communication interface configured to exchange information within a local communication network and a second communication interface locally connected to the first communication interface, the second communication interface of each repeater device (R1, R2, R3, R4) of the set comprising a short range near field communication NFC transceiver configured to exchange digital data intended to be transferred to the local communication network via the first communication interface, a set of stand alone devices (D1, D2) each associated with a repeater device of a set of first repeater devices (R1, R4), each stand alone device (D1, D2) comprising a NFC interface coupled with the NFC transceiver of a repeater device of the set of first repeater devices (R1, R4), a mobile device configured to exchange digital data with a repeater device of a set of second repeater devices (R2, R3), each repeater device of the second set (R2, R3) being configured to forward to the local communication network the digital data received from the mobile device, said digital data being transmitted to each stand alone device (D1, D2) via each repeater device of the set of first repeater devices (R1, R4), the mobile device comprises a NFC interface configured to exchange digital data with the NFC transceiver of a repeater device of the set of second repeater devices (R2, R3), said second repeater devices (R2, R3) being at a distance from each repeater device of the set of first repeater devices (R1, R4) exceeding a standard range for NFC communication, the system is characterized in that the mobile device is configured to send the digital data to all, or a group of stand alone devices (D1, D2) each associated with a repeater device of the set of first repeater devices (R1, R4). a set of repeater devices (R1, R2, R3, R4), each repeater device comprising a first communication interface configured to exchange information within a local communication network and a second communication interface locally connected to the first communication interface, the second communication interface of each repeater device (R1, R2, R3, R4) of the set comprising a short range near field communication NFC transceiver configured to exchange digital data intended to be transferred to the local communication network via the first communication interface, a set of stand alone devices (D1, D2) each associated with a repeater device of a set of first repeater devices (R1, R4), each stand alone device (D1, D2) comprising a NFC interface coupled with the NFC transceiver of a repeater device of the set of first repeater devices (R1, R4), a mobile device configured to exchange digital data with a repeater device of a set of second repeater devices (R2, R3), each repeater device of the second set (R2, R3) being configured to forward to the local communication network the digital data received from the mobile device, said digital data being transmitted to each stand alone device (D1, D2) via each repeater device of the set of first repeater devices (R1, R4), the mobile device comprises a NFC interface configured to exchange digital data with the NFC transceiver of a repeater device of the set of second repeater devices (R2, R3), said second repeater devices (R2, R3) being at a distance from each repeater device of the set of first repeater devices (R1, R4) exceeding a standard range for NFC communication, the system is characterized in that the mobile device is configured to send the digital data to all, or a group of stand alone devices (D1, D2) each associated with a repeater device of the set of first repeater devices (R1, R4).