A position trace tells you a route. Aggregate enough traces and a different question becomes answerable: where do assets or people actually spend time, where do they congregate, which areas are used and which are not.
Adding inertial sensing improves both. It fills gaps where satellite visibility is intermittent — under structures, between buildings, indoors briefly — and it distinguishes genuine dwell from a lost fix, which a position-only system cannot.
The output is heat mapping and dwell analytics rather than a moving dot, which is what makes it useful for utilisation and process questions rather than only for finding things.