Graspable Interface

A graspable interface is a type of tangible user interface in which users interact with a computer system by physically grasping and manipulating real-world objects that are tracked by the system, typically through camera-based image processing or embedded sensors. Unlike traditional input devices like mice or keyboards that act as generic intermediaries, graspable interface objects serve as direct, specialised representations of the digital content being manipulated. In accessibility contexts, graspable interfaces can provide intuitive, hands-on interaction for users who benefit from physical manipulation — for example, blind users constructing spatial layouts with tracked building blocks, or people with cognitive disabilities interacting with concrete physical objects rather than abstract screen-based controls. The term is closely related to but predates the broader concept of tangible user interfaces.