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Their phones search for known WiFi networks whenever they’re not currently connected to WiFi. You can monitor and log this traffic. Many (most?) modern smartpho
by heartbreak 2y ago
Their phones search for known WiFi networks whenever they’re not currently connected to WiFi. You can monitor and log this traffic. Many (most?) modern smartphones randomize their MAC address when not connected, but a few years ago you could look for repeat visitors this way, too.