Due to the large volume of data and detail in a traditional map pack, updates are usually done about twice a year, meaning high-construction areas can become terribly inaccurate before your maps company gives you a fresh edition.
The information is shown as location trails on a computer screen map, down to a level of detail which shows on which side of the street and in which direction a person is moving.
Scientists used data from Planck to create an artificially colored map of temperature variations across the sky in the early universe, in more detail than ever before.