A Defcon attendee shows off a version of a Pony Express bag.

The Open Organization of Lockpickers has a strong presence this year.

A selection of books for sale.

The NSA brought a conversation piece for their table.

A Blue Box for sale

Another Blue Box for sale.

Defcon shirts.

Defcon shirt.

Custom engraving and more on the show floor.

Outdoor Wi-Fi kits.

"Keep Calm and Hack Naked."

Charity hackers.

The NSA's signage, on the corner between their table and the EFF's table.

The EFF table.

Hardware bits and more.

Hacker schwag, for those who advertise.

Defcon art schwag.

For baby hackers.

Hubs for sale.

Fake iPads for sale.

The ACLU's table with anti-NSA handouts.

ACLU table staff is having a good time.

The back room behind the expo had interesting table centerpieces.

Defcon's Lockpick Village was a hands-on learning environment and always busy. It also was where the male-female gender ratio neared 50-50.

Lockpick Village staff showing how to escape handcuffs in seconds with a simple shim.

Defcon's floor art holds clues for the many crypto puzzles and adventures for attendees.

NinjaTel; the mobile cell network for exclusive phones that are actually passes for the most coveted party at Defcon, Ninja Party.

An example of Defcon 2012 badges; it's difficult to find the same one twice.