Last-few-meters Wayfinding

The final segment of an indoor or outdoor journey, from the nearest routable point (a building lobby, a doorway, a kerbside pin on a map) to the exact end destination (a specific room, counter, or seat). For blind travellers, this last segment is disproportionately difficult: turn-by-turn navigation apps stop producing useful instructions once the user is 'close enough', but 'close enough' is rarely close enough for someone without vision. Techniques explored for this problem include higher-resolution indoor localisation, sign recognition to read room numbers aloud, context-aware landmarks, and close-range human assistance. It is recognised as a distinct research problem because the accuracy, interface, and information needs are different from macro-route wayfinding.