A method for identifying a device capable of communicating by Li-Fi including the steps of generating and storing a list of first pieces of address data and a list of transmission frequencies each associated with a first piece of address data; selecting second pieces of address data (11) to form a MAC address (10); transforming each second piece of address data into a third piece of address data containing a transmission frequency value associated with the second piece of address data; generating a global address; assigning the global address to the device; and recording the global address in a memory module of the device capable of communicating by Li-Fi.