Magic-wise, I’d suppose that obliviation would make a rememberall signal permanently, but then it seems like that would be important to for obliviators to counter somehow.
This was brought up before:
“More importantly, why did the Remembrall go off like that?” Harry said. “Does it mean I’ve been Obliviated?”
“That puzzles me as well,” Professor McGonagall said slowly. “If it were that simple, I would think that the courts would use Remembralls, and they do not. I shall look into it, Mr. Potter.”
Of course, there still hasn’t been any sort of resolution from that, though there are a number of interesting theories...
This was brought up before:
Of course, there still hasn’t been any sort of resolution from that, though there are a number of interesting theories...