From a NY Times article on how to disappear, a quick tip on how to effectively fake a fingerprint:
Are officials troubling you for fingerprints? “There’s a nongreasy glue, like a mucilage,” he said, that is more or less invisible once applied. “You put it on your thumb. You roll your thumb over your heel. Now, you’ve got a heel print on your thumb for no one who exists.”
Frank Ahearn, one of the people quoted in the article, actually runs a business that helps people disappear…or at least he used to, until he disappeared.