The THMB, pronunced "thumb", is essentially an improved version of VBD that has been miniaturized to fit inside a PDA-like case. The device, which is meant to be handheld, also comprises an LCD screen that allows for the generation of co-located haptics/visual feedback. The THMB stimulates the user's thumb and is mounted on a vertical slider so that it can be dragged up and down along the left side of the case.

Animations and Movie

THMB assembly Co-location of tactile and the visual feedback
Fixed tactile display in activation


  1. Design of haptic stimuli for mobile devices