Special Qualities of Auror Magic?

[Tom Wall]

No: HPFGUIDX 79730

Melody wrote:
But they do not put his little name, or a hair sample, or whatever
they need to track his magic. They seem to not be able to track him
in that method. To take this up a step, if they can track a person,
then seems to me that Dumbledore can track Voldemort. Track when he
does magic. And if that is also true, then they can track the DE's
back in the day when the MoM wanted to catch them and capture them
when they do an Unforgivable.

Tom:
Great point - wouldn't that be handy if you could just put a special 
homing device on Voldemort's magic? Too handy.


Melody:
So seems to me, that once you get off Moderated Status, your magic is
untrackable. :D

The adults have passed the status. They cannot be rewatched. Maybe
is a something along the lines that once a magic child is born, they
are in a special state until they move on when they graduate. That is
why the MoM can track Hagrid. He never graduated.
END QUOTE.

Tom replies:
I think your analysis makes quite a bit of sense, especially when I 
sat down and really thought about it. After all, we're talking about 
Harry's offenses under the Decree for the Restriction of "Underage" 
Sorcery, right?

So, if that's the case, then it would seem logical that the Ministry 
would be keeping track of all students' homes, and the locations of 
known "non-graduates."

So, they're keeping track of Harry's "area," but more specifically, 
only cases of 'non-adult' magic in the area, right? So, wizards and 
witches (like Mundungus and any other members of the Order who are 
watching Harry) wouldn't register, but House Elves and Harry would. 
Hmmm...

Still, in light of that, I'm stumped a little bit about people like 
the Weasleys (who clearly use magic at home over the summer) and 
Hermione, who says (I think, in the first book) that she practiced 
magic at home. Why don't they have to deal with Hearings?

I guess, using the previous logic, they probably aren't 'listening' 
to Hermione's area, although they probably should be. Then again, 
(off canon entirely) maybe they cut pre-first-years some extra 
slack, or perhaps some kind of parental permission could be given. 

And they'd probably ignore the Burrow completely, right, 'cause it's 
a wizarding household.

-Tom