Sometimes carrying around a laptop to conduct wireless recon can be a pain.
Today I will show how with your rooted Android & a couple free programs from the Android marketplace you can begin doing some real wireless recon.

Install:

To start search for and install the following 5 programs.
1) Droidwall
2) WiFi Analyzer
3) Shark for Root
4) Shark Reader
5) Network Discovery

Some other useful tools: ssh client, file manager w/SMB, RDP client, Wireless Tether,
Android Webserver, FTP client & server

Setup:

Once all programs are installed we setup our Droidwall like so

Continue doing this for Network Discovery and other programs
you wish to use during your recon fun.

Action:

We launch our WiFi Analyzer

Using the signal strength meter we find a good access point to visit.
Then we launch our Shark to eat up the packets out there.

Eventually we will end up with some data to read.
We can use Shark Reader now or a desktop later to read the data.

We can also use our Network Discovery tool to find devices
and services running on the target network.

Some more advanced techniques using some of the additional tools mentioned above could be to launch phishing attacks in areas requiring users to login thru a web based portal.

When looking for cool spots to capture some traffic try your networks, coffee shops, airports, campuses, hotels, etc…