Investigating the Information Transfer Efficiency of a 3×3 Watch-back Tactile Display

Jaeyeon Lee, Jaehyun Han, and Geehyuk Lee

A watch-back tactile display (WBTD) is expected to be a viable supplement to the user interface limitations of a smartwatch. However, its design requires that many design parameters such as tactor types and stimulus patterns be determined. We conducted a series of experiments to explore the design space of a WBTD consisting of 3×3 tactors.

We compared different types of tactors: surface-type and tip-type; temporal patterns: with and without sensory saltation; and spatial patterns and locus of stimulus. Through the series of experiments, we learned that the tactor type, sensory saltation, and locus of a stimulus can affect the performance of a WBTD. Based on our findings, our recommendation for an efficient WBTD is to employ tip-type tactors, temporal patterns with sensory saltation, and point patterns on the leftmost outer area of the wrist.

Publication

  • Investigating the Information Transfer Efficiency of a 3×3 Watch-back Tactile Display
    Jaeyeon Lee, Jaehyun Han, and Geehyuk Lee, CHI 2015. [acm dl] [slides]

 

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