This haptic device is prototyped by using Shape Memory Alloys and force sensor. "The device is composed of an armband [...] The input device triggers specific touch effects with patterns and the degree of user's squeezing force, and the armband generateds the concomitant touch and haptic effects."
Reference: Wang, R. et al. 2010 Touch & Talk: Contextualizing Remote Touch for Affective Interaction. In TEI 2010.