Method for exchanging information between a group of emitter-receiver devices supporting Bluetooth and WiFi, wherein a transmission from an emitter-receiver device having WiFi disabled comprises the following steps: - each emitter-receiver device having WiFi disabled and Bluetooth enabled carries out Bluetooth scans for detecting Bluetooth identification names of other emitter-receiver devices located in the Bluetooth reception range; - in case a first emitter-receiver device having WiFi disabled has a transmission to make, said emitter-receiver device: - indicates so to other emitter-receiver devices in the Bluetooth reception range by means of signaling a Bluetooth transmission indication to said other emitter-receiver devices in the Bluetooth reception range, wherein the Bluetooth transmission indication is encoded into the Bluetooth identification name of the first emitter-receiver device, and - generates a WiFi network; - upon reception of the Bluetooth transmission indication from the first emitter-receiver device, WiFi is enabled in all emitter-receiver devices in the Bluetooth reception range previously having WiFi disabled and they connect to said WiFi network generated by the first emitter-receiver device; and all emitter-receiver devices in the Bluetooth reception range previously having WiFi enabled also connect to said WiFi network; - the transmission from the first emitter-receiver device to the rest of the emitter-receiver devices in the WiFi reception range takes place by means of the respective WiFi connections to said WiFi network generated by the first emitter-receiver device; and - once the transmission is finished, WiFi is disabled in said first emitter-receiver device and in all said emitter-receiver devices in the WiFi reception range previously having WiFi disabled. - each emitter-receiver device having WiFi disabled and Bluetooth enabled carries out Bluetooth scans for detecting Bluetooth identification names of other emitter-receiver devices located in the Bluetooth reception range; - in case a first emitter-receiver device having WiFi disabled has a transmission to make, said emitter-receiver device: - indicates so to other emitter-receiver devices in the Bluetooth reception range by means of signaling a Bluetooth transmission indication to said other emitter-receiver devices in the Bluetooth reception range, wherein the Bluetooth transmission indication is encoded into the Bluetooth identification name of the first emitter-receiver device, and - generates a WiFi network; - indicates so to other emitter-receiver devices in the Bluetooth reception range by means of signaling a Bluetooth transmission indication to said other emitter-receiver devices in the Bluetooth reception range, wherein the Bluetooth transmission indication is encoded into the Bluetooth identification name of the first emitter-receiver device, and - generates a WiFi network; - upon reception of the Bluetooth transmission indication from the first emitter-receiver device, WiFi is enabled in all emitter-receiver devices in the Bluetooth reception range previously having WiFi disabled and they connect to said WiFi network generated by the first emitter-receiver device; and all emitter-receiver devices in the Bluetooth reception range previously having WiFi enabled also connect to said WiFi network; - the transmission from the first emitter-receiver device to the rest of the emitter-receiver devices in the WiFi reception range takes place by means of the respective WiFi connections to said WiFi network generated by the first emitter-receiver device; and - once the transmission is finished, WiFi is disabled in said first emitter-receiver device and in all said emitter-receiver devices in the WiFi reception range previously having WiFi disabled.