Method and system for identifying Wi-Fi devices

A method of identifying Wi-Fi devices, the method comprising:

• receiving, by a plurality N of access points (AP1, AP2, . . . , APN) arranged at an installation, probe request frames sent by Wi-Fi devices;
• generating, by the plurality N of access points (AP1, AP2, . . . , APN), a fingerprint associated to each probe request frame;
• sending, from the plurality N of access points (AP1, AP2, . . . , APN) to a server, the generated fingerprint, a timestamp and a Received Signal Strength Indicator (RSSI) measurement associated to each probe request frame;
• identifying, by the server, bursts of probe request frames using their associated timestamps;
• for each burst i of probe request frames, determining an averaged RSSI measurement (Xi1, Xi2, . . . , XiN) received by each access point (AP1, AP2, . . . , APN);
• for each fingerprint, performing an N-dimensional cluster analysis on the averaged RSSI measurements (Xi1, Xi2, XiN) received by each access point (AP1, AP2, . . . , APN), obtaining at least one cluster per fingerprint;
• and
• identifying a Wi-Fi device for each different cluster.