Iterating to Reduce Time-to-Shock
To test for usability, we focused on Time-to-Shock, the measure of time from the AED’s activation to when treatment is delivered to the victim. We ran multiple rounds of in-person research, inviting participants with no prior emergency response knowledge to test prototypes on a CPR dummy. This research was essential to understanding the initial shock experienced by bystanders, their hesitancy to take first steps, confusion surrounding the location of the AED pads, and other key gaps. After each round of research, we made iterations to the physical AED interactions, audio design, and on-screen animations.
From 7 minutes to close to a minute
Through this research process, we were able to cut down average Time-to-Shock from over 7 minutes with many failures to shock, to under 1 minute and 30 seconds.