Parents of Ethan Wyman, who died 11 months after being diagnosed with two brain tumours, want wi-fi removed from classrooms at Te Horo School in Kapiti Coast.
The school has sent a survey to parents asking if the wireless service should be removed after the Wymans expressed fears that the radiation effect of wi-fi could be linked to cancer.
Damon Wyman, who still has two children at the school, said Ethan was diagnosed with the tumours three months after he was given a wi-fi-connected iPod.
Even though the device was on standby, it was still emitting bursts of radiation as it tried to connect to the router, Damon said.
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According to Damon, doctors who examined Ethan said the tumours appeared to be about four months old.
"We're not saying that caused it, but it seems like a bit of a coincidence. Most people would be very cautious about giving their 5-year-old a cellphone - well, this is 30 kids in a classroom (being exposed) to the same thing," Damon said.