Places marker outside Moscone West at Google I/O

A Google Maps place marker on the steps of Moscone West pinpoints the location of Google I/O, the developer conference that starts tomorrow in San Francisco.

Registration inside Moscone West

Google I/O is now in its fourth year. The company has been tight-lipped about what it will announce at the show.

Stuffed Android at Google I/O

A stuffed green Android sits on a shelf at Moscone West, welcoming developers to the conference.

Gear pickup

Aside from the regular conference swag like T-shirts, Google often offers generous gifts to attendees. In 2010, every attendee received an HTC Evo 4G phone.

Registration open at Google I/O

Moscone West was already swarming with people picking up badges this afternoon, minutes after registration opened at noon. After conference tickets went on sale the morning of February 7, Senior VP Vic Gundotra tweeted that they had sold out in 59 minutes.

In line to pick up t-shirts

Picking up the coveted Google I/O T-shirts today in San Francisco.

Lite-Brite-like design

Eric Kessel holds up his T-shirt to show off the colorful Lite-Brite-like design on this year's Google I/O shirt.

What's to come at Google I/O

Prior to the show, Google keeps quiet about the specific content and announcements. Take a look at CNET's Android Atlas, where Scott Webster predicts a few of the announcements we might see at this year's I/O.

Inside Moscone West

Inside Moscone West in San Francisco today shortly after registration opened at noon.

The doors open at Google I/O 2011

Tomorrow, Google I/O officially opens its doors at Moscone West.

CNET's team of reporters will be live-blogging the Google I/O keynote speeches beginning at 9 a.m. Tune in to see what Google has in store.