Where a person was at a given time is rarely revealed by any single public record. It is usually reconstructed from a combination of records, none of which intended to disclose it, and each of which makes the reconstruction slightly easier.

A flight, where it touches a private aircraft tracker, places a person near an airport. A property purchase places the person in a city. A photograph from a public event places them at a particular location on a particular date. A piece of professional correspondence with a timestamp suggests their working hours. A registration with a local service suggests an extended stay. Each is harmless; the assembled picture is a calendar.

The work of reconstruction has become routine for parts of the press, the legal profession, and the investigative trades. The tools are general-purpose. The skill is patience and a willingness to read each source for what it incidentally discloses rather than what it was intended to convey.

For a principal whose movements are themselves of interest, this is unwelcome. The location may not be sensitive in itself; the demonstration that it is recoverable is. It alters how the principal must think about subsequent records: whether to leave the trace, where, in what detail.

The work of the desk in this category is to understand, in advance, which sources contribute most to the reconstruction. Some are unavoidable; some are easier to manage; some yield to a careful conversation with the body that holds them. The aim is not invisibility, which is unrealistic. It is a record from which fewer reconstructions can be made with confidence.