Question

Anonymous severely harmed So-and-so.
So-and-so claims that as a result of the harm he became withdrawn, etc.
The defendant demands that retroactive phone-location tracking be done on the accuser, So-and-so, and in that way they can check whether there was indeed a clear negative change in his behavior patterns and whether his claim about the extent of the harm is true.
The problem is that such tracking is an invasion of privacy.
Without tracking, there is a presumption that the offender is guilty, and the accuser is not required to substantiate with evidence every claim of harm.
Does the accuser and plaintiff waive his right to privacy in order to justify the lawsuit (and if his privacy is important to him, then he should withdraw the lawsuit), or does he stand on his privacy and the case is judged as though there were no phone in the world at all?