Is it possible to get information as byte (or text( variable in the WiFi?

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Is it possible to receive all bytes which are flowing in WiFi? Can I receive it as a byte or text using (if I know the WiFi passowrd)? The programing language isn't importatant for me. I think that everybody can read the informations which are flowing using the WiFi because they're the electromagnic waves?

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Phil McKerracher On

You can use Wireshark (www.wireshark.org) to decode packets that are flowing in or out of the machine the programme is running on.

To snoop on packets that are passing between other machines you'll need something that can capture raw packets, such as Shark for Root for Android (https://play.google.com/store/apps/details?id=lv.n3o.shark&hl=en)

Of course, if the traffic is encrypted (connected to an HTTPS address or through a VPN for example) then it's a lot more difficult to decode (though the NSA doesn't have much trouble). You'll need to become a "man in the middle" or get hold of the encryption keys somehow.