Obsessive psychogeography is a branch of psychogeography which involves collecting an abundance of precise information about one’s surroundings including but not limited to observations, emotions, and interactions. New technologies especially advancements in mobile communications facilitate the data collection process of many of these works.

This practice extends from a reach history of psychogeography. Excerpt from psychogeography page:

Psychogeography’ was defined in 1955 by Guy Debord as “the study of the precise laws and specific effects of the geographical environment, consciously organized or not, on the emotions and behavior of individuals.” Another definition is “a whole toy box full of playful, inventive strategies for exploring cities…just about anything that takes pedestrians off their predictable paths and jolts them into a new awareness of the urban landscape.”
Obsessive psychogeography Wikipedia