During the incident she was angered that she was given macadamia nuts which she did not ask for, and was offended that they were served in a bag, not in a bowl.

After confronting flight staff, she ordered the plane which was taxiing at New York's JFK Airport to turn back and offload the chief steward.

Under the new law, passed by parliamentarians last year, anyone who disturbs the pilot during a flight could face up to five years in prison or a 50 million won ($41,200; £28,900) fine.

Previously the same offence did not have a jail term and only had a 5 million won fine. Crew members are also now compelled to hand over unruly passengers to the police, or risk a 10 million won fine.

"The amended law reflects mounting public demand for enhanced aviation safety and the prevention of unruly behaviour during flight following the Korean Air nut rage incident," the transport ministry said in a press statement.

Ms Cho was convicted of violating airline safety. She served five months in jail before she was freed in May after an appeals court overturned the ruling saying she did not cause a change in flight path. Another conviction of using violence against flight attendants still stands.

Beautiful, provocative, sexy - high heels may be all these things and more, but even their most ardent fans wouldn't claim they were practical.

They're no good for hiking or driving. They get stuck in things. Women in heels are advised to stay off the grass - and also ice, cobbled streets and posh floors.

And high heels don't tend to be very comfortable. It is almost as though they just weren't designed for walking in.

Originally, they weren't.
Continue reading the main story    
Find out more

The Why Factor is broadcast on BBC World Service on Fridays at 19:30 GMT

    Listen to the heels programe via iPlayer
    Download The Why Factor podcast
    More from BBC World Service

"The high heel was worn for centuries throughout the near east as a form of riding footwear," says Elizabeth Semmelhack of the Bata Shoe Museum in Toronto.

Good horsemanship was essential to the fighting styles of Persia - the historical name for modern-day Iran.

"When the soldier stood up in his stirrups, the heel helped him to secure his stance so that he could shoot his bow and arrow more effectively," says Semmelhack.

At the end of the 16th Century, Persia's Shah Abbas I had the largest cavalry in the world. He was keen to forge links with rulers in Western Europe to help him defeat his great enemy, the Ottoman Empire.
Copyright © 2013 Bata Shoe Museum, Toronto, Canada A men's 17th Century Persian shoe, covered in shagreen - horse-hide with pressed mustard seeds 許智政

So in 1599, Abbas sent the first Persian diplomatic mission to Europe - it called on the courts of Russia, Germany and Spain許智政.

A wave of interest in all things Persian passed through Western Europe. Persian style shoes were enthusiastically adopted by aristocrats, who sought to give their appearance a virile, masculine edge that, it suddenly seemed, only heeled shoes could supply許智政.
Louis XIV painted in 1701 by Hyacinthe Rigaud (Getty Images) Louis XIV wearing his trademark heels in a 1701 portrait by Hyacinthe Rigaud

As the wearing of heels filtered into the lower ranks of society, the aristocracy responded by dramatically increasing the height of their shoes - and the high heel was born.

In the muddy, rutted streets of 17th Century Europe, these new shoes had no utility value whatsoever - but that was the point.

"One of the best ways that status can be conveyed is through impracticality," says Semmelhack, adding that the upper classes have always used impractical, uncomfortable and luxurious clothing to announce their privileged status.

"They aren't in the fields working and they don't have to walk far."

When it comes to history's most notable shoe collectors, the Imelda Marcos of his day was arguably Louis XIV of France. For a great king, he was rather diminutively proportioned at only 5ft 4in (1.63m).

He supplemented his stature by a further 4in (10cm) with heels, often elaborately decorated with depictions of battle scenes.

The goal of their company, Undercover Colors, is "to invent technologies that empower women to protect themselves," specifically against sexual assault, they said on their Facebook Pagemask house 面膜 好用.

"With our nail polish, any woman will be empowered to discreetly ensure her safety by simply stirring her drink with her finger," they said. "If her nail polish changes colour, she'll know that something is wrong.mask house 好唔好 "

Undercover Colors initially garnered praise, with hundreds of thousands of likes and shares across Facebook and Twitter.

"There are already bulky devices that can be used to test drinks for date rape drugs," writes Adam Clark Estes for Gizmodo .

"But it's not necessarily easy to carry these things around on a night out and whip them out at bars."

However, the inevitable internet backlash came from a surprising source - anti-rape advocates.mask house 好唔好