The adjective “hapto-digital” expresses that something concerns both the sense of touch, more precisely haptic sensory perception, and a digital technology or the connection between the two.
Furthermore, the adjective “hapto-digital” can be used to indicate that something concerns both the haptic properties of an object – in the sense of the tactile surface appearance of a physical object which is perceptible through active touch – as a phenomenon of the entisphere as well as the digital info sphere.

The above definitions of the adjective “hapto-digital” have been proposed as part of the terminology of the “Digital Era Framework”. In this frame of reference, four spheres are differentiated according to the type of manifestation of information, which allow a classification of processes, phenomena and objects: The infosphere, which consists of the analog infosphere and the digital infosphere, the cognisphere and the entisphere.