![]() tested the OpenMAC at a local library (with permission), in combination with a number of his own little Wi-Fi repeaters to expand the reach of the network. An external antenna is required for the module, which can be selected based on the size or gain requirements for a specific deployment. The device consists of an ESP-07S module, a regulator circuit for getting power from a USB-C connector, and a button for power cycling. After experimenting with these probe requests, has created OpenMAC, a tiny ESP8266 based sniffer that could be hidden anywhere. ![]() ![]() These probe requests contain the device’s MAC address and the SSID of the hotspot it’s looking for, which can potentially be used to identify a specific device and where it’s been. When a Wi-Fi device is switched on, it starts spewing out probe requests to try and find a familiar access point. ![]()
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