Wizards who cannot Apparate or whose destination has no fireplace rendering Floo powder useless and who wish to travel by daylight, meaning that broomsticks, Thestrals, flying cars, and dragons are inappropriate, will have to resort to the use of a Portkey.
Almost any inanimate objects can be turned into a Portkey. Once bewitched, the object will transport anyone who grasps it to a prearranged destination. A Portkey may also be enchanted to transport the grasper (or graspers) only at a given time. In this way, the arrivals and departures of great numbers of witches and wizards can be noted, enabling such events such as the Quidditch World Cup to take place with few security breaches.
When secrecy is paramount, and mass movement is planned, the chosen Portkey will be a nondescript object secreted in an out-of-the-way place, so that it will be taken for a piece of unimportant debris by Muggle passers-by. Accidents have occurred, however; once two Muggle dog-walkers have found themselves accidentally transported to a Celestina Warbeck concert in 1990, because their dogs had run off with an old trainer on Clapham Common, leaving an anguished crowd of witches and wizards to look frantically for their Portkey on a stretch of empty grass, hopefully seizing old crisp packets and cigarette ends. One of the Muggle dog-walkers was even invited on stage by Celestina to perform a duet of 'A Cauldron Full of Hot, Strong Love'. While the Memory Charm placed upon him by a harried Ministry official seemed to take at the time, he has since written a popular Muggle song that bears an uncanny resemblance to Celestina's worldwide hit
(Celestina Warbeck is a witch singer/celebrity, who sings on the radio.)
(The song if you want to listen to it, youtube.com/watch?v=iU5I8ek0Rt8)
The sensation of traveling by Portkey is universally agreed to be uncomfortable, if not downright unpleasant, and can lead to nausea, giddiness and worse. Healers recommend that the elderly, pregnant and infirm avoid using Portkeys. The suggestion of arranging Portkeys for the transportation of annoying relatives has saved many a wizarding family Christmas
The setting of making a portkey was all to do with spells but the process Draco was reading involved formations. The book he was reading was a rare Black family book, which taught people how to make portkeys from formation rather than spells. The making of Portkeys was done by the spell Portus but the method Draco was reading didn't require one to cast that particular spell, as it completely depended upon the formation.
Generally, creating a portkey without permission is illegal and could even have someone face prison time for it, but luckily the wizards didn't have any method to track someone who used the formation as they don't even have to use the spells. Portkey's rules are very strict, if a person wants to make a portkey connecting two different countries he will need to have the permission of both the nations.
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I am kinda tired today so I wasn't planning on writing a chapter, but I didn't want to leave you guys hanging so I wrote a very short one, basically explaining portkeys to anyone who is confused about it from Pottermore.
The chapter will continue the same as always from tomorrow onwards.✌