South Korean retailers and experts have hit back at a government ban of unlicensed "selfie sticks", saying punishments of $30,000 fines or three year's jail for selling the devices is excessive.
Selfie sticks are extendable rods that use Bluetooth to remotely trigger a phone to take a picture.
They are popular in South Korea, but the government said the signals from unlicensed selfie sticks might disrupt other devices, such as medical equipment, using the same radio frequencies.
According to the Wireless Telegraphy Act, it is now a violation to sell, manufacture or import communication devices without authentication, with violators facing either a fine of up to $30,000 or a maximum prison sentence of three years.
The regulation came into force on November 21.
But Korea University wireless systems researcher Kim Chung-ki said the government's fears were unfounded.
"No matter how many people press the button at the same time, it's not sufficient to interfere with other devices' network or cause interference in frequencies in unlicensed bandwidth," he said.
"So practically-speaking, it's hard to cause frequency interference with a bluetooth selfie stick."
Smartphone accessories retailer Kim Sung-eun, who sells licensed selfie sticks, said he felt the new regulation was excessive.
"Most of people have selfie sticks these days. It's now too late, I think this regulation of selfie sticks is useless and is excessive control," he said.
A retailer in downtown Seoul said even though the regulation had been in place for more than a week, there had not yet been any raids on vendors selling unregistered selfie sticks.
Others said manufacturers of selfie sticks should be held responsible for making sure all selfie sticks were licensed.
"If those [unlicensed] selfie sticks cause problems in terms of electromagnetic waves, manufacturers should consider the fact when they produce selfie sticks," resident Kim Min-ji said.
"I don't think most people who use a selfie stick are aware of the regulation."