Joshua Kinberg is taking his anti-Bush protest to the streets this fall, and like hand-drawn hopscotch squares, it'll probably stay there for several days, if not weeks.

The 25-year-old CSPAN junkie and fanatical blog reader is using bikes, wireless technology and a lot of chalk to spread his message and those of people around the world. During the Republican National Convention in New York, Internet users will be able to send text messages via Kinberg's "Bikes Against Bush" Web site, and select messages will then be sent to bikes equipped with homemade computer-controlled gadgets that fire off five spray cans of chalk.

"[The effect will be] like those planes that do skywriting," Kinberg explained. "But in this case, it's the spray cans full of chalk that will automatically print the message in a dot pattern on the streets and sidewalks. Webcams will also be fitted on the bikes so the messages will have an international audience on the Internet."

"I knew the Republican National Convention was coming to New York and I wanted to do something," he said as matter-of-factly as someone who'd simply painted a protest sign to hold up. Kinberg cut his teeth on cutting-edge electronics at the Parsons School of Design, where he's working toward a master's degree in design and technology.

Yury Gitman is Kinberg's advisor and a wireless and emerging-media artist who created something called Magicbike -- a traditional bike outfitted with wireless Internet connectivity and offering free access wherever it's ridden or parked.

"You can deliver your message like you deliver pizza. But it can be where you want it to be, not where you have to be," Gitman said, adding that messages printed during the Bikes Against Bush protest have the potential to reach more people than traditional banners and posters. "They will still be around long after the protesters have left."

"Bikes printing messages could be the historical equivalent of the postcards used to protest urban planning back in the '60s," said Carin Kioni, director of the Vera List Center for Art and Politics at the New School University in New York. "It was a familiar medium with a new message. It was a familiar format and unobtrusive, but effective in getting the message out."

Though the technological twist is new, cycling groups are no strangers to protests. Kinberg participated in a ride on March 20 to protest the Iraq war and saw firsthand the impact bicyclists can have. While people on feet were contained in one area of Manhattan, the 150 cyclists were mobile. Security followed them around.

And Bikes Against Bush isn't Kinberg's first foray into using the Internet to push social and political change. He sparked discussion about race relations and racial politics with a Web site called "Black People Love Us," on which a fake white couple brag about all the black friends they have.

"I got a taste of the kind of power I had," he said of the response the site generated, "how one person can have an impact and get their voice heard without the huge budget of a TV station."

The Republican National Convention runs from August 30 to September 2.