We investigated the critical factors of and their effects on human vibration perception.

We evaluated empirical vibration designs for information communication and compared user performance across designs.

We developed a vibration notification mechanism on a wrist mounted prototype for novice users.

We conducted an experiment to measure pair-wise discriminability of a larger set of vibration stimuli, and based on this experiment, selected a smaller set of vibration stimuli with the highest discriminability for our design.

Based on survey responses, we selected the 5 mobile applications that were ranked as having the highest priorities for receiving notification events, and then we associated specific vibration stimuli for alerting events to the selected mobile applications.

We conducted another experiment to evaluate user performance when using our final vibration notification design on a wrist mounted prototype device.

Most individuals discriminated 4–5 vibrations based on perceived intensity and perceived duration

Increasing vibration discriminability can increase the accuracy in recognizing vibration-coded information