>I take a picture of the applicant list on your desk. That doesn't make the list of applicants "my data".

If the list is sitting there out in the open, then yes, it does make it your data.

Well, maybe not. A reasonable person might not think that about that applicant list. I bet you could make a different argument for taking a picture versus memorizing the list too.

The legal system thrives on specifics of a situation, so simply asserting that the list of applicants is or is not "yours" because you can see it seems like a gross oversimplification. The specifics of how you came to be there, what your relationship with the officeholder is, and so on probably matters a lot in that situation and I think there might be some unwritten rules or social norms that you'd be expected to follow as well.