Hot & cold. Too tired to explain any further.

[United States Patent Application 20090120105

Ramsay; Erin B. May 14, 2009

Thermal Haptic Effects

Abstract

A thermal haptic feedback device includes a plurality of cells coupled to a processor. The processor controls each of the cells so that each cell can independently generate heating or cooling effects. Unique haptic effects, such as a simulated wind effect, can be generated by causing some cells to be hot or cold, or changing some of the cells from hot to cold.]

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