After a judge agreed to release him on bond, a statement placed on his website said, "GZ hopes to be able to update the site in the next day or two, God willing. He sends his thanks for your thoughts and support."

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If he just can't resist getting messages out to his supporters, Zimmerman may be better off using Facebook and Twitter instead of his website because it probably has much weaker security than the social media sites, Ratliff said.

Someone could find out where he is by hacking his website or an email account, he said.

"Anytime you are on the Internet, you are potentially traceable," Ratliff said. "The best way to not be found by anyone is to not use any technology at all."

Whatever means Zimmerman uses to hide, it could get expensive.

Zimmerman has limited resources. He was working at a mortgage risk management firm but stopped working there after the confrontation with Martin because of the public attention.

His wife, Shellie, is in nursing school and doesn't work. O'Mara said on CNN's Anderson Cooper 360 that his client is not under police protection and that his family is paying for the security measures.

"He's sort of on his own with his own protection at this point," O'Mara said. O'Mara has ruled out Zimmerman getting a job while he is out on bail. O'Mara wrote in court papers that Zimmerman "has no significant financial assets or savings."

Zimmerman at least has some experience hiding. He went underground after the Feb. 26 confrontation with Martin at the Sanford, Fla., gated community of townhomes where Zimmerman lived. Martin was unarmed and was walking back to the home of his father's fiancee when Zimmerman saw him, called police and began following him.

A fight broke out - investigators say it is unknown who started it. Zimmerman says Martin, who was visiting from Miami, attacked him. Zimmerman says he shot Martin in self-defense, citing Florida's "stand your ground" law, which gives broad legal protection to anyone who says they used deadly force because they feared death or great bodily harm.

Zimmerman was not charged for more than six weeks, sparking nationwide protests. Martin was black; Zimmerman's father is white and his mother is from Peru.

Martin's parents have a "heavy heart" now that Zimmerman has been released from jail, said Benjamin Crump, an attorney for the 17-year-old's parents, Tracy Martin and Sybrina Fulton.

"They hope his freedom is temporary because the pain he has caused this family is permanent," Crump said Monday.

Given his success at eluding searchers before his arrest, Baez said he is confident Zimmerman will keep out of public view. "He seems to be a very careful guy," Baez said. "Based on his prior ability to lay low, he will be fine. He is going to do exactly what is required of him."