1. A system for interacting with a three-dimensional object dataset, the three-dimensional object dataset being based on a signal obtained from a scanner arranged for scanning a particular object, the system comprising a signal input for receiving a signal from an interaction device comprising a surface having a typical shape of at least part of the kind of object represented by the three-dimensional object dataset, wherein the signal is indicative of a location on the surface that is indicated by a user; and a mapping unit for i) registering the three-dimensional object dataset to an electronic representation of the shape of the surface to obtain a registration, and ii) mapping the indicated location to a corresponding point of the object based on the registration.