To protest what he called the threat to family life posed by technology, a disgruntled programmer claims he sabotaged an educational software package to teach kids to swear.

The Secret Writer's Society, a Macintosh game published by Panasonic Interactive Media, is designed to help 7- to 9-year-olds learn to write by reciting their compositions back to them.

But the simple game goes awry when a child types three or four sentences in a row and double clicks the mouse. At that point, the program will recite words such as "masturbation," "fellatio," "asshole," and other words that make many parents squeamish.

The anonymous programmer, who added the features to the game while under contract to Panasonic, developed the crack with the help of RTMark, a venture capital-style funding organization for activists.

"I wanted to wake parents up to reality -- here's what happens if you hand your responsibility to some machine," the programmer said in the RTMark statement, which will be released on Monday.

RTMark paid the coder US$1,000 for his trouble.

When the problem first emerged in June, Panasonic blamed a software glitch and offered replacement copies to any concerned parents. On Friday, the company again denied that the swearing software was the product of sabotage.

"We wrote that software in-house, so I believe that the programmer's claims are untrue," said Panasonic's Elizabeth Olson.

Olson said that the problem resulted from a feature written by Makoto Morise, head of the company's education and DVD division.

"We were aware that kids could use the software to read back bad language so Makoto wrote some code prohibiting the software from reciting about 40 swear words," said Olson.

But the editor of a Web magazine that evaluates educational software finds the rogue-programmer explanation plausible. Andrew Maisel, the editor in chief of SuperKids, said he found it strange that the problem only hits Macintosh computers.

"I don't believe that Panasonic developed the text-to-speech software in-house, and so I would suspect that [the] so-called bug could indeed [be] the action of a rogue programmer."

Panasonic claims that kids will have a hard time getting Secret Writer's Society to utter obscenities. But Maisel disputed that claim, saying that colorful language was only a few clicks away for a curious child.

Last year, RTMark offered similar assistance to a programmer at Maxis, the software publisher behind SimCopter. In that incident, a staff programmer added unscripted characters to the game that only appeared in certain scenes.