Trace Silk is a more advanced tracking charm than the Tracking Spell.
It can locate the approximate location of an underage wizard and detect magic within a certain range around him, centered on that underage wizard.
When an underage wizard casts a spell in front of Muggles, the Office for the Misuse of Magic will be warned and a letter of warning will be sent directly to the person involved. (The first time Harry Potter received a warning without investigation is the best example.
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How did trace silk come about?
There is no detailed introduction in the Harry Potter books. Most of the fan settings are on the wand. A lot of people just think that this is the original setting in the book, which is really speechless.
The setting of this book is: generated through contract magic,
The original text is: A notice was sent to every student, warning them not to use magic during the holidays.
During the summer vacation, students at Hogwarts will receive a notice from the Ministry of Magic prohibiting underage students from using magic outside of school. (This reminded me of a similar summer vacation notice I had signed before.
This is where inspiration comes from.)
Third-year students need a guardian's signature to go to Hogsmeade, so this notification signature is actually not unexpected.
This document will contain contract magic, and the Ministry of Magic will use contract magic. Of course, the magic contract is not a ban, but a tracking and early warning, forming a surveillance of underage wizards, which is the tracking spell mentioned earlier.
When an underage wizard uses magic in an area where Muggles live, or in front of Muggles, or when someone uses magic around them, the Ministry of Magic's Misuse of Magic Office will be notified immediately.
In the Harry Potter books, there is no indication that the traces of underage wizards are related to wands.
They would only use flashback spells to examine the perpetrator's wand to identify what magic he had used.
If the trace is related to the wand, I think I only need to change the wand to get rid of the Ministry of Magic's tracking.
By the way, when you use wandless magic, the Ministry of Magic usually has nothing to do with you because there is no evidence.
When students at the Wagado Academy of Magic were accused of violating the International Statute of Secrecy, they had a powerful excuse: I just waved my hand and never meant to dislocate his jaw.
As for the fact that Voldemort's murder of Old Tom and his family was not discovered, that is because Morfin Gaunt (uncle) lived in that area, had a criminal record, and confessed to his "crime".
(Someone took the blame and was a repeat offender. Naturally, no one suspected it. Moreover, Voldemort was already very powerful at the time and may have had the ability to block the traces of the Ministry of Magic.)