Underage trace : a loophole?

Its stated in HBP that ministry can't distinguish who perform the magic in a house. So pure/half blood kid can do magic in their homes & ministry will think it's their parents but mudbloods & kids like harry/voldy cant do it undetected! Isnt it a loophole?

I've never thought about it but yes,you do have a point.

I think this should have been discussed actively in Doubts & Discussions about HP book Series.. but now since u have made a new topic here, carry on.. 😊

There is a discussion going (I think all points arent discussed). So I thought there it would affect the countinuety of that.

yes. Dumbledore or someone said that it was for parents to control Kids.