I am trying to log the MAC address of wifi devices around that try to connect to a free wifi.
I.e. on an iPhone you will often see that screen proposing free wifis around you. In order to display this information the iPhone needs to communicate with the AP before an connection has been established. Hence, it should -generally speaking- be possible to log this, right?
I had a look at Kismet and airodump-ng (on my Mac) and I was able to capture all network traffic, but couldn't extract what I am looking for.
Has someone any links, ideas, .... that might help?
Thanks everyone reading this, Nico