1. Artworks can be hard to spot and installations may also be in areas which are hard to find i.e suspended on the ceiling or above stairways.
2. Visual diagrams in brochures, though well drawn, are prone to misunderstandings, especially for first-time visitors to the museum.
3. Most companion apps have static maps of the museum. This is because using GPS for positional tracking does not work well in museums as they are mostly indoors.