Passive scanning

[jrychter]

Hi,

Will the ESP32 be suitable for passive wi-fi client detection (such as customer counting in retail stores)?

I'm asking, because this requires specific support from both hardware and SDK, to be able to quickly switch and listen on multiple frequencies.

Please note that I do not mean running an AP and detecting clients connected to it: this is about passively listening and detecting wi-fi clients that aren't necessarily associated to any AP.

thanks,
--J.

[fineshang]

Yes. It can. There is a product based on ESP8266. It named "WiFi Signal Probe", made by DOIT (www.doit.am)